refactor(detail): render sections on the server behind a client shell

page.tsx now composes the sections and passes them through SchoolDetailShell
as children, so ~1,300 lines of static markup stop shipping as client
JavaScript. The shell keeps what is genuinely interactive: back link, header
reveal, hero map, compare CTA, sticky nav and scroll-spy.

The scroll-spy already located sections via document.getElementById, so it
works unchanged against server-rendered children.

Charts needed a client wrapper: next/dynamic with ssr:false is illegal in a
Server Component, so components/school/charts.tsx is the boundary that keeps
Chart.js (64 KB gz) lazy and browser-only.

Measured on this build:
- school route client chunk: 8 KB gz (33 KB raw)
- total static JS across all chunks: 380.6 -> 350.7 KB gz
- section markup is absent from every client chunk ("Got their first choice",
  "Ofsted reports", "Most deprived" etc. all return 0 hits); shell strings
  still present, as expected
- shared baseline unchanged at 172 KB gz -- out of scope, as designed

The 14 characterization tests pass byte-identical to the commit that
introduced them. Only the render helper changed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

nextjs-app/__tests__/support/renderSchoolDetail.tsx

@@ -1,38 +1,77 @@
 /**
  * The single seam between the characterization tests and the component tree.
  *
- * Task 7 of the server/client split rewrites the bodies of these functions to
+ * This file is the ONLY thing the server/client split was allowed to change.
- * render the new shell + server-sections composition. Nothing else in the test
+ * It now renders the shell + server-sections composition that
- * suite may change — the characterization assertions passing unmodified across
+ * app/school/[slug]/page.tsx builds, instead of the old monolithic views.
- * that rewrite is the proof that behaviour was preserved.
+ * Every assertion in schoolDetail.characterization.test.tsx is unchanged —
- *
+ * that is the proof the refactor preserved behaviour.
- * National averages now arrive as a server-supplied prop rather than a client
- * fetch, so no fetch stub is needed.
  */
 
 import { render } from '@testing-library/react';
 import type { ReactNode } from 'react';
-import { SchoolDetailView } from '@/components/SchoolDetailView';
-import { SecondarySchoolDetailView } from '@/components/SecondarySchoolDetailView';
 import { ComparisonProvider } from '@/context/ComparisonProvider';
+import { SchoolDetailShell } from '@/components/school/SchoolDetailShell';
+import { PrimarySchoolSections } from '@/components/school/PrimarySchoolSections';
+import { SecondarySchoolSections } from '@/components/school/SecondarySchoolSections';
+import {
+  computeSchoolFlags, buildNavItems,
+  computeSecondaryFlags, buildSecondaryNavItems,
+} from '@/lib/schoolSections';
 import { nationalAveragesFixture } from './schoolFixtures';
 
-// Both views call useComparison(), which throws outside the provider. In the
+// The shell calls useComparison(), which throws outside the provider. In the
 // app this wrapper comes from app/layout.tsx.
 function withProviders(ui: ReactNode) {
   return <ComparisonProvider>{ui}</ComparisonProvider>;
 }
 
 export function renderSchoolDetail(fixture: any) {
+  const flags = computeSchoolFlags(fixture);
+  const navItems = buildNavItems(flags, {
+    ofsted: fixture.ofsted,
+    admissions: fixture.admissions,
+    yearlyDataLength: fixture.yearlyData.length,
+  });
+
   return render(
-    withProviders(<SchoolDetailView {...fixture} nationalAvg={nationalAveragesFixture} />),
+    withProviders(
+      <SchoolDetailShell
+        {...fixture}
+        nationalAvg={nationalAveragesFixture}
+        navItems={navItems}
+      >
+        <PrimarySchoolSections
+          {...fixture}
+          nationalAvg={nationalAveragesFixture}
+          flags={flags}
+        />
+      </SchoolDetailShell>,
+    ),
   );
 }
 
 export function renderSecondarySchoolDetail(fixture: any) {
+  const flags = computeSecondaryFlags(fixture);
+  const navItems = buildSecondaryNavItems(flags, {
+    ofsted: fixture.ofsted,
+    admissions: fixture.admissions,
+    yearlyDataLength: fixture.yearlyData.length,
+  });
+
   return render(
     withProviders(
-      <SecondarySchoolDetailView {...fixture} nationalAvg={nationalAveragesFixture} />,
+      <SchoolDetailShell
+        {...fixture}
+        nationalAvg={nationalAveragesFixture}
+        navItems={navItems}
+      >
+        <SecondarySchoolSections
+          {...fixture}
+          nationalAvg={nationalAveragesFixture}
+          flags={flags}
+        />
+      </SchoolDetailShell>,
     ),
   );
 }

nextjs-app/app/school/[slug]/page.tsx

@@ -6,8 +6,13 @@
 
 import { fetchSchoolDetails, fetchSchools, fetchNationalAverages } from '@/lib/api';
 import { notFound, redirect } from 'next/navigation';
-import { SchoolDetailView } from '@/components/SchoolDetailView';
+import { SchoolDetailShell } from '@/components/school/SchoolDetailShell';
-import { SecondarySchoolDetailView } from '@/components/SecondarySchoolDetailView';
+import { PrimarySchoolSections } from '@/components/school/PrimarySchoolSections';
+import { SecondarySchoolSections } from '@/components/school/SecondarySchoolSections';
+import {
+  computeSchoolFlags, buildNavItems,
+  computeSecondaryFlags, buildSecondaryNavItems,
+} from '@/lib/schoolSections';
 import { parseSchoolSlug, schoolUrl } from '@/lib/utils';
 import type { NationalAverages } from '@/lib/types';
 import type { Metadata } from 'next';
@@ -152,13 +157,30 @@ export default async function SchoolPage({ params }: SchoolPageProps) {
 
   const phaseStr = (school_info.phase ?? '').toLowerCase();
   const isAllThrough = phaseStr === 'all-through';
-  // All-through schools go to SchoolDetailView (renders both KS2 + KS4 sections).
+  // All-through schools go to PrimarySchoolSections (renders both KS2 + KS4).
-  // SecondarySchoolDetailView is KS4-only, so all-through schools would lose SATs data.
+  // SecondarySchoolSections is KS4-only, so all-through schools would lose SATs data.
   const isSecondary = !isAllThrough && (
     phaseStr.includes('secondary')
     || yearly_data.some((d: any) => d.attainment_8_score != null)
   );
 
+  // Section list is computed on the server so the client shell never needs to
+  // derive it -- and so it can never disagree with what the sections render.
+  const sectionInput = {
+    schoolInfo: school_info, yearlyData: yearly_data,
+    absenceData: absence_data, census: census ?? null,
+    deprivation: deprivation ?? null, finance: finance ?? null,
+  };
+  const primaryFlags = computeSchoolFlags(sectionInput);
+  const secondaryFlags = computeSecondaryFlags(sectionInput);
+  const navInput = {
+    ofsted: ofsted ?? null,
+    admissions: admissions ?? null,
+    yearlyDataLength: yearly_data.length,
+  };
+  const primaryNavItems = buildNavItems(primaryFlags, navInput);
+  const secondaryNavItems = buildSecondaryNavItems(secondaryFlags, navInput);
+
   // Generate JSON-LD structured data for SEO
   const structuredData = {
     '@context': 'https://schema.org',
@@ -193,19 +215,7 @@ export default async function SchoolPage({ params }: SchoolPageProps) {
         dangerouslySetInnerHTML={{ __html: JSON.stringify(structuredData) }}
       />
       {isSecondary ? (
-        <SecondarySchoolDetailView
+        <SchoolDetailShell
-          schoolInfo={school_info}
-          yearlyData={yearly_data}
-          absenceData={absence_data}
-          ofsted={ofsted ?? null}
-          census={census ?? null}
-          admissions={admissions ?? null}
-          deprivation={deprivation ?? null}
-          finance={finance ?? null}
-          nationalAvg={nationalAvg}
-        />
-      ) : (
-        <SchoolDetailView
           schoolInfo={school_info}
           yearlyData={yearly_data}
           absenceData={absence_data}
@@ -216,7 +226,49 @@ export default async function SchoolPage({ params }: SchoolPageProps) {
           deprivation={deprivation ?? null}
           finance={finance ?? null}
           nationalAvg={nationalAvg}
+          navItems={secondaryNavItems}
+        >
+          <SecondarySchoolSections
+            schoolInfo={school_info}
+            yearlyData={yearly_data}
+            absenceData={absence_data}
+            ofsted={ofsted ?? null}
+            census={census ?? null}
+            admissions={admissions ?? null}
+            deprivation={deprivation ?? null}
+            finance={finance ?? null}
+            nationalAvg={nationalAvg}
+            flags={secondaryFlags}
           />
+        </SchoolDetailShell>
+      ) : (
+        <SchoolDetailShell
+          schoolInfo={school_info}
+          yearlyData={yearly_data}
+          absenceData={absence_data}
+          ofsted={ofsted ?? null}
+          census={census ?? null}
+          admissions={admissions ?? null}
+          admissionsHistory={admissions_history ?? []}
+          deprivation={deprivation ?? null}
+          finance={finance ?? null}
+          nationalAvg={nationalAvg}
+          navItems={primaryNavItems}
+        >
+          <PrimarySchoolSections
+            schoolInfo={school_info}
+            yearlyData={yearly_data}
+            absenceData={absence_data}
+            ofsted={ofsted ?? null}
+            census={census ?? null}
+            admissions={admissions ?? null}
+            admissionsHistory={admissions_history ?? []}
+            deprivation={deprivation ?? null}
+            finance={finance ?? null}
+            nationalAvg={nationalAvg}
+            flags={primaryFlags}
+          />
+        </SchoolDetailShell>
       )}
     </>
   );

nextjs-app/components/SecondarySchoolDetailView.tsx

@@ -1,947 +0,0 @@
-/**
- * SecondarySchoolDetailView Component
- * Dedicated detail view for secondary schools with scroll-to-section navigation.
- * All sections render at once; the sticky nav scrolls to each.
- */
-
-'use client';
-
-import { useEffect, useRef, useState } from 'react';
-import { useRouter } from 'next/navigation';
-import dynamic from 'next/dynamic';
-import { useComparison } from '@/hooks/useComparison';
-import { MetricTooltip } from './MetricTooltip';
-import { SchoolHeroMap, type SchoolHeroMapHandle } from './SchoolHeroMap';
-
-const PerformanceChart = dynamic(
-  () => import('./PerformanceChart').then((m) => m.PerformanceChart),
-  { ssr: false },
-);
-import type {
-  School, SchoolResult, AbsenceData,
-  OfstedInspection, SchoolCensus,
-  SchoolAdmissions,
-  SchoolDeprivation, SchoolFinance, NationalAverages,
-} from '@/lib/types';
-import { formatPercentage, formatProgress, formatAcademicYear, formatAgeRange, isProposedToClose, ofstedLegacyAreas } from '@/lib/utils';
-import { computeSecondaryFlags, buildSecondaryNavItems } from '@/lib/schoolSections';
-import { DeltaChip } from './DeltaChip';
-import { SpecialSchoolNote } from './SpecialSchoolNote';
-import { track, getNavigationSource } from '@/lib/analytics';
-import styles from './SecondarySchoolDetailView.module.css';
-
-const OFSTED_LABELS: Record<number, string> = {
-  1: 'Outstanding', 2: 'Good', 3: 'Requires Improvement', 4: 'Inadequate',
-};
-
-const RC_LABELS: Record<number, string> = {
-  1: 'Exceptional', 2: 'Strong', 3: 'Expected standard', 4: 'Needs attention', 5: 'Urgent improvement',
-};
-
-const RC_CATEGORIES = [
-  { key: 'rc_inclusion' as const,             label: 'Inclusion' },
-  { key: 'rc_curriculum_teaching' as const,   label: 'Curriculum & Teaching' },
-  { key: 'rc_achievement' as const,           label: 'Achievement' },
-  { key: 'rc_attendance_behaviour' as const,  label: 'Attendance & Behaviour' },
-  { key: 'rc_personal_development' as const,  label: 'Personal Development' },
-  { key: 'rc_leadership_governance' as const, label: 'Leadership & Governance' },
-  { key: 'rc_early_years' as const,           label: 'Early Years' },
-  { key: 'rc_sixth_form' as const,            label: 'Sixth Form' },
-];
-
-function progressClass(val: number | null | undefined, modStyles: Record<string, string>): string {
-  if (val == null) return '';
-  if (val > 0) return modStyles.progressPositive;
-  if (val < 0) return modStyles.progressNegative;
-  return '';
-}
-
-function deprivationDesc(decile: number): string {
-  if (decile <= 3) return `This school is in one of England's most deprived areas (decile ${decile}/10). Many pupils may face additional challenges at home.`;
-  if (decile <= 7) return `This school is in an area with average levels of deprivation (decile ${decile}/10).`;
-  return `This school is in one of England's less deprived areas (decile ${decile}/10).`;
-}
-
-interface SecondarySchoolDetailViewProps {
-  schoolInfo: School;
-  yearlyData: SchoolResult[];
-  absenceData: AbsenceData | null;
-  ofsted: OfstedInspection | null;
-  census: SchoolCensus | null;
-  admissions: SchoolAdmissions | null;
-  deprivation: SchoolDeprivation | null;
-  finance: SchoolFinance | null;
-  /** Fetched on the server so the England-comparison deltas are in the
-   *  initial HTML; null when the endpoint is unavailable. */
-  nationalAvg: NationalAverages | null;
-}
-
-export function SecondarySchoolDetailView({
-  schoolInfo, yearlyData,
-  ofsted, census, admissions, deprivation, finance, absenceData,
-  nationalAvg,
-}: SecondarySchoolDetailViewProps) {
-  const router = useRouter();
-  // Hero map — the "View on map" link opens its fullscreen view.
-  const heroMapRef = useRef<SchoolHeroMapHandle>(null);
-  const { addSchool, removeSchool, isSelected } = useComparison();
-  const isInComparison = isSelected(schoolInfo.urn);
-
-  const [activeSection, setActiveSection] = useState<string>('');
-  // Header details collapse behind a "Show all details" link on mobile/tablet.
-  const [detailsOpen, setDetailsOpen] = useState(false);
-
-  // Derived data-shape logic lives in lib/schoolSections so the server route
-  // can compute the section list without importing this client component.
-  const flags = computeSecondaryFlags({ schoolInfo, yearlyData, deprivation, finance });
-  const {
-    latestResults, hasSixthForm, hasFinance, hasDeprivation, hasLocation,
-    hasWellbeing, hasResults, p8Suspended, isSpecial, suppressComparison,
-  } = flags;
-
-  const secondaryAvg = nationalAvg?.secondary ?? {};
-
-  const admissionsTag = (() => {
-    const policy = schoolInfo.admissions_policy?.toLowerCase() ?? '';
-    if (policy.includes('selective')) return 'Selective';
-    const denom = schoolInfo.religious_denomination ?? '';
-    if (denom && denom !== 'Does not apply') return 'Faith priority';
-    return null;
-  })();
-
-  const handleComparisonToggle = () => {
-    if (isInComparison) {
-      removeSchool(schoolInfo.urn);
-      track('compare_school_removed', { urn: schoolInfo.urn, from: 'detail' });
-    } else {
-      addSchool(schoolInfo);
-      track('compare_school_added', { urn: schoolInfo.urn, from: 'detail' });
-    }
-  };
-
-  // Back returns wherever the user came from; deep-links fall back to search
-  // so the button never dead-ends or leaves the site.
-  const handleBack = () => {
-    if (typeof window !== 'undefined' && window.history.length > 1) {
-      router.back();
-    } else {
-      router.push('/search');
-    }
-  };
-
-  const scrollToTop = () => {
-    if (typeof window !== 'undefined') window.scrollTo({ top: 0, behavior: 'smooth' });
-  };
-
-  useEffect(() => {
-    track('school_viewed', {
-      urn: schoolInfo.urn,
-      phase: schoolInfo.phase || 'secondary',
-      local_authority: schoolInfo.local_authority || 'unknown',
-      from: getNavigationSource(),
-    });
-  // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [schoolInfo.urn]);
-
-  const navItems = buildSecondaryNavItems(flags, {
-    ofsted, admissions, yearlyDataLength: yearlyData.length,
-  });
-
-  // Track active section as user scrolls
-  useEffect(() => {
-    const ids = navItems.map(n => n.id);
-    if (!ids.length) return;
-    const observers: IntersectionObserver[] = [];
-    const ratioMap: Record<string, number> = {};
-    const pickActive = () => {
-      const top = Object.entries(ratioMap).sort((a, b) => b[1] - a[1])[0];
-      setActiveSection(top?.[1] > 0 ? top[0] : '');
-    };
-    ids.forEach(id => {
-      const el = document.getElementById(id);
-      if (!el) return;
-      ratioMap[id] = 0;
-      const obs = new IntersectionObserver(
-        ([entry]) => { ratioMap[id] = entry.intersectionRatio; pickActive(); },
-        { threshold: [0, 0.1, 0.25, 0.5, 0.75, 1.0], rootMargin: '-56px 0px 0px 0px' },
-      );
-      obs.observe(el);
-      observers.push(obs);
-    });
-    return () => observers.forEach(o => o.disconnect());
-  // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [navItems.map(n => n.id).join(',')]);
-
-  // A report card is identified by the presence of report-card area
-  // judgements, NOT by `framework` — the API sets `framework` to the raw
-  // event grouping (e.g. "Schools - S5") even for report-card schools, so
-  // the old `framework === 'ReportCard'` test never matched and report cards
-  // were rendered as legacy ratings dated to a pre-Nov-2025 inspection.
-  const isReportCard = !!(
-    ofsted?.report_card && Object.keys(ofsted.report_card).length > 0
-  );
-  // Report cards are dated by their own inspection (rc_inspection_date), never
-  // the legacy inspection_date (report cards exist only from Nov 2025).
-  const ofstedInspectedDate = isReportCard
-    ? ofsted?.rc_inspection_date ?? null
-    : ofsted?.inspection_date ?? null;
-
-  // ── Ofsted: detect if all OEIF sub-grades match the overall ───────────
-  const oeifAreas = ofsted ? ofstedLegacyAreas(ofsted) : [];
-  const oeifAllSameGrade =
-    !!ofsted &&
-    !isReportCard &&
-    oeifAreas.length >= 3 &&
-    oeifAreas.every((a) => a.value === ofsted.overall_effectiveness);
-
-  // National Attainment 8 baseline for the "Results Over Time" chart.
-  const heroAtt8Nat = secondaryAvg.attainment_8_score ?? null;
-
-  return (
-    <div className={styles.container}>
-      {/* Standalone back link, above the header — returns wherever the user
-          came from. Scrolls away; the sticky bar keeps a "back to top" control. */}
-      <button type="button" onClick={handleBack} className={styles.topBack}>
-        <span aria-hidden="true">←</span> Back
-      </button>
-
-      {/* ── Header — the location map band blends into the school title ── */}
-      <header className={`${styles.header}${hasLocation ? ` ${styles.headerHasMap}` : ''}`}>
-        {hasLocation && (
-          <SchoolHeroMap ref={heroMapRef} lat={schoolInfo.latitude!} lng={schoolInfo.longitude!} />
-        )}
-        <div className={styles.headerContent}>
-          <div className={styles.titleSection}>
-            <h1 className={styles.schoolName}>{schoolInfo.school_name}</h1>
-            <div className={styles.badges}>
-              {schoolInfo.school_type && (
-                <span className={styles.badge}>{schoolInfo.school_type}</span>
-              )}
-              {schoolInfo.gender && schoolInfo.gender !== 'Mixed' && (
-                <span className={styles.badge}>{schoolInfo.gender}&apos;s school</span>
-              )}
-              {schoolInfo.age_range && (
-                <span className={styles.badge}>{formatAgeRange(schoolInfo.age_range)}</span>
-              )}
-              {schoolInfo.nursery_provision && (
-                <span className={styles.badge}>Nursery</span>
-              )}
-              {hasSixthForm && (
-                <span className={styles.badge}>Sixth form</span>
-              )}
-              {admissionsTag && (
-                <span className={`${styles.badge} ${admissionsTag === 'Selective' ? styles.badgeSelective : styles.badgeFaith}`}>
-                  {admissionsTag}
-                </span>
-              )}
-            </div>
-            {isProposedToClose(schoolInfo) && (
-              <div className={styles.closingStrip} role="note">
-                <strong>⚠ Proposed to close</strong> — this school is proposed for closure,
-                check with the local authority before applying.
-              </div>
-            )}
-            {schoolInfo.address && (
-              <p className={styles.address}>
-                {schoolInfo.address}{schoolInfo.postcode && `, ${schoolInfo.postcode}`}
-                {hasLocation && (
-                  <>
-                    {' · '}
-                    <button
-                      type="button"
-                      className={styles.mapLink}
-                      onClick={() => { heroMapRef.current?.open(); track('section_nav_used', { section: 'location', via: 'hero_link' }); }}
-                    >
-                      View on map ↗
-                    </button>
-                  </>
-                )}
-              </p>
-            )}
-            <button
-              type="button"
-              className={styles.detailsToggle}
-              aria-expanded={detailsOpen}
-              aria-controls="school-header-details"
-              onClick={() => setDetailsOpen((o) => !o)}
-            >
-              {detailsOpen ? 'Hide details' : 'Show all details'}
-              <span aria-hidden="true">{detailsOpen ? '▴' : '▾'}</span>
-            </button>
-            <div
-              id="school-header-details"
-              className={`${styles.headerDetails}${detailsOpen ? ` ${styles.headerDetailsOpen}` : ''}`}
-            >
-              {schoolInfo.headteacher_name && (
-                <span className={styles.headerDetail}>
-                  <strong>Headteacher:</strong> {schoolInfo.headteacher_name}
-                </span>
-              )}
-              {schoolInfo.website && (
-                <span className={styles.headerDetail}>
-                  <a
-                    href={/^https?:\/\//i.test(schoolInfo.website) ? schoolInfo.website : `https://${schoolInfo.website}`}
-                    target="_blank"
-                    rel="noopener noreferrer"
-                    data-umami-event="external_link_clicked"
-                    data-umami-event-target="school_website"
-                  >
-                    School website ↗
-                  </a>
-                </span>
-              )}
-              {(schoolInfo.total_pupils != null || latestResults?.total_pupils != null) && (
-                <span className={styles.headerDetail}>
-                  <strong>Pupils:</strong> {(schoolInfo.total_pupils ?? latestResults!.total_pupils!).toLocaleString()}
-                  {schoolInfo.capacity != null && ` (capacity: ${schoolInfo.capacity})`}
-                </span>
-              )}
-              {schoolInfo.trust_name && (
-                <span className={styles.headerDetail}>
-                  Part of <strong>{schoolInfo.trust_name}</strong>
-                </span>
-              )}
-              {schoolInfo.telephone && (
-                <span className={styles.headerDetail}>
-                  <strong>Phone:</strong>{' '}
-                  <a href={`tel:${schoolInfo.telephone.replace(/\s+/g, '')}`}>
-                    {schoolInfo.telephone}
-                  </a>
-                </span>
-              )}
-              {schoolInfo.religious_denomination && (
-                <span className={styles.headerDetail}>
-                  <strong>Religious character:</strong>{' '}
-                  {['Does not apply', 'None'].includes(schoolInfo.religious_denomination)
-                    ? 'None'
-                    : schoolInfo.religious_denomination}
-                </span>
-              )}
-              {schoolInfo.county && (
-                <span className={styles.headerDetail}>
-                  <strong>County:</strong> {schoolInfo.county}
-                </span>
-              )}
-              {schoolInfo.parliamentary_constituency && (
-                <span className={styles.headerDetail}>
-                  <strong>Constituency:</strong> {schoolInfo.parliamentary_constituency}
-                </span>
-              )}
-            </div>
-          </div>
-          <div className={styles.actions}>
-            <button
-              onClick={handleComparisonToggle}
-              className={isInComparison ? styles.btnRemove : styles.btnAdd}
-              aria-label={isInComparison ? 'In comparison' : 'Add to compare'}
-            >
-              {/* On phones the map hero shows only the glyph (nav-bar style). */}
-              <span className={styles.btnCompareLabel}>
-                {isInComparison ? '✓ In Comparison' : '+ Add to Compare'}
-              </span>
-              <span className={styles.btnCompareGlyph} aria-hidden="true">
-                {isInComparison ? '✓' : '+'}
-              </span>
-            </button>
-          </div>
-        </div>
-      </header>
-
-      {/* ── Sticky section navigation ─────────────────────── */}
-      <nav className={styles.tabNav} aria-label="Page sections">
-        <div className={styles.tabNavInner}>
-          <button onClick={scrollToTop} className={styles.backBtn} aria-label="Back to top">↑ Top</button>
-          {navItems.length > 0 && <div className={styles.tabNavDivider} />}
-          {navItems.map(({ id, label }) => (
-            <a
-              key={id}
-              href={`#${id}`}
-              className={`${styles.tabBtn}${activeSection === id ? ` ${styles.tabBtnActive}` : ''}`}
-              onClick={() => track('section_nav_used', { section: id })}
-            >
-              {label}
-            </a>
-          ))}
-        </div>
-      </nav>
-
-      {/* ── Ofsted ─────────────────────────────────────── */}
-      {ofsted && (
-        <section id="ofsted" className={styles.card}>
-          <h2 className={styles.sectionTitle}>
-            {isReportCard ? 'Ofsted Report Card' : 'Ofsted Rating'}
-            {ofstedInspectedDate && (
-              <span className={styles.ofstedDate}>
-                {' '}Inspected {new Date(ofstedInspectedDate).toLocaleDateString('en-GB', { day: 'numeric', month: 'long', year: 'numeric' })}
-              </span>
-            )}
-            <a
-              href={`https://reports.ofsted.gov.uk/inspection-reports/find-inspection-report/provider/ELS/${schoolInfo.urn}`}
-              target="_blank"
-              rel="noopener noreferrer"
-              className={styles.ofstedReportLink}
-              data-umami-event="external_link_clicked"
-              data-umami-event-target="ofsted"
-            >
-              Ofsted reports ↗
-            </a>
-          </h2>
-          {isReportCard ? (
-            <>
-              <p className={styles.ofstedDisclaimer}>
-                From November 2025, Ofsted replaced single overall grades with Report Cards rating schools across several areas.
-              </p>
-              <div className={`${styles.metricsGrid} ${styles.gradeGrid}`}>
-                {ofsted.rc_safeguarding_met != null && (
-                  <div className={styles.metricCard}>
-                    <div className={styles.metricLabel}>Safeguarding</div>
-                    <div className={`${styles.metricValue} ${ofsted.rc_safeguarding_met ? styles.safeguardingMet : styles.safeguardingNotMet}`}>
-                      {ofsted.rc_safeguarding_met ? 'Met' : 'Not met'}
-                    </div>
-                  </div>
-                )}
-                {RC_CATEGORIES.filter(({ key }) => key !== 'rc_early_years' || ofsted[key] != null).map(({ key, label }) => {
-                  const value = ofsted[key] as number | null;
-                  return value != null ? (
-                    <div key={key} className={styles.metricCard}>
-                      <div className={styles.metricLabel}>{label}</div>
-                      <div className={`${styles.metricValue} ${styles[`rcGrade${value}`]}`}>
-                        {RC_LABELS[value]}
-                      </div>
-                    </div>
-                  ) : null;
-                })}
-              </div>
-            </>
-          ) : ofsted.overall_effectiveness ? (
-            <>
-              <div className={styles.ofstedHeader}>
-                <span className={`${styles.ofstedGrade} ${styles[`ofstedGrade${ofsted.overall_effectiveness}`]}`}>
-                  {OFSTED_LABELS[ofsted.overall_effectiveness]}
-                </span>
-                {ofsted.previous_overall != null &&
-                  ofsted.previous_overall !== ofsted.overall_effectiveness && (
-                  <span className={styles.ofstedPrevious}>
-                    Previously: {OFSTED_LABELS[ofsted.previous_overall]}
-                  </span>
-                )}
-              </div>
-              <p className={styles.ofstedDisclaimer}>
-                {ofsted.grade_source === 'ungraded_carried_forward'
-                  ? 'This overall grade is carried forward from an earlier inspection — Ofsted has since visited without issuing a new overall grade. From September 2024, Ofsted no longer makes an overall effectiveness judgement.'
-                  : 'From September 2024, Ofsted no longer makes an overall effectiveness judgement in inspections.'}
-              </p>
-              {oeifAllSameGrade ? (
-                <p className={styles.ofstedAllSame}>
-                  Rated <strong>{OFSTED_LABELS[ofsted.overall_effectiveness]}</strong> across all inspected areas — Quality of Teaching, Behaviour, Pupils&apos; Development and Leadership.
-                </p>
-              ) : (
-                <div className={`${styles.metricsGrid} ${styles.gradeGrid}`}>
-                  {oeifAreas.map(({ label, value }) => (
-                    <div key={label} className={styles.metricCard}>
-                      <div className={styles.metricLabel}>{label}</div>
-                      <div className={`${styles.metricValue} ${styles[`ofstedGrade${value}`]}`}>
-                        {OFSTED_LABELS[value]}
-                      </div>
-                    </div>
-                  ))}
-                </div>
-              )}
-            </>
-          ) : (
-            <>
-              <p className={styles.sectionSubtitle}>
-                From September 2024, Ofsted no longer gives a single overall grade.
-              </p>
-              <div className={`${styles.metricsGrid} ${styles.gradeGrid}`}>
-                {[
-                  { label: 'Quality of Education', value: ofsted.quality_of_education },
-                  { label: 'Behaviour & Attitudes', value: ofsted.behaviour_attitudes },
-                  { label: 'Personal Development', value: ofsted.personal_development },
-                  { label: 'Leadership & Management', value: ofsted.leadership_management },
-                ].filter(({ value }) => value != null).map(({ label, value }) => (
-                  <div key={label} className={styles.metricCard}>
-                    <div className={styles.metricLabel}>{label}</div>
-                    <div className={`${styles.metricValue} ${styles[`ofstedGrade${value}`]}`}>
-                      {OFSTED_LABELS[value!]}
-                    </div>
-                  </div>
-                ))}
-              </div>
-            </>
-          )}
-        </section>
-      )}
-
-      {/* ── GCSE Results ───────────────────────────────── */}
-      {hasResults && latestResults && (
-        <section id="gcse" className={styles.card}>
-          <h2 className={styles.sectionTitle}>
-            GCSE Results ({formatAcademicYear(latestResults.year)})
-          </h2>
-          <p className={styles.sectionSubtitle}>
-            GCSE results for Year 11 pupils.{!suppressComparison && ' England averages shown for comparison.'}
-          </p>
-
-          <SpecialSchoolNote school={schoolInfo} />
-
-          {p8Suspended && (
-            <div className={styles.p8Banner}>
-              Progress 8 isn&apos;t published for 2024/25: this GCSE year group sat no KS2 tests
-              (COVID), so DfE has no starting point to measure their progress from.
-            </div>
-          )}
-
-          {/* Hero stat cards — top GCSE metrics */}
-          <div className={styles.heroStatGrid}>
-            {latestResults.attainment_8_score != null && (
-              <div className={styles.heroStatCard}>
-                <div className={styles.heroStatLabel}>
-                  Attainment 8 score
-                  <MetricTooltip metricKey="attainment_8_score" />
-                </div>
-                <div className={styles.heroStatValue}>
-                  {latestResults.attainment_8_score.toFixed(1)}
-                  {!suppressComparison && secondaryAvg.attainment_8_score != null && (
-                    <DeltaChip
-                      value={latestResults.attainment_8_score}
-                      baseline={secondaryAvg.attainment_8_score}
-                      unit="pts"
-                      size="sm"
-                    />
-                  )}
-                </div>
-                {!suppressComparison && secondaryAvg.attainment_8_score != null && (
-                  <div className={styles.heroStatHint}>England avg: {secondaryAvg.attainment_8_score.toFixed(1)}</div>
-                )}
-              </div>
-            )}
-            {latestResults.progress_8_score != null && (
-              <div className={styles.heroStatCard}>
-                <div className={styles.heroStatLabel}>
-                  Progress 8 score
-                  <MetricTooltip metricKey="progress_8_score" />
-                </div>
-                <div className={`${styles.heroStatValue} ${progressClass(latestResults.progress_8_score, styles)}`}>
-                  {formatProgress(latestResults.progress_8_score)}
-                </div>
-                {(latestResults.progress_8_lower_ci != null && latestResults.progress_8_upper_ci != null) ? (
-                  <div className={styles.heroStatHint}>
-                    CI: {latestResults.progress_8_lower_ci.toFixed(2)} to {latestResults.progress_8_upper_ci.toFixed(2)}
-                  </div>
-                ) : (
-                  <div className={styles.heroStatHint}>National baseline: 0.0</div>
-                )}
-              </div>
-            )}
-            {latestResults.english_maths_strong_pass_pct != null && (
-              <div className={styles.heroStatCard}>
-                <div className={styles.heroStatLabel}>
-                  English &amp; Maths Grade 5+
-                  <MetricTooltip metricKey="english_maths_strong_pass_pct" />
-                </div>
-                <div className={styles.heroStatValue}>
-                  {formatPercentage(latestResults.english_maths_strong_pass_pct)}
-                  {!suppressComparison && secondaryAvg.english_maths_strong_pass_pct != null && (
-                    <DeltaChip
-                      value={latestResults.english_maths_strong_pass_pct}
-                      baseline={secondaryAvg.english_maths_strong_pass_pct}
-                      unit="pts"
-                      size="sm"
-                    />
-                  )}
-                </div>
-                {!suppressComparison && secondaryAvg.english_maths_strong_pass_pct != null && (
-                  <div className={styles.heroStatHint}>England avg: {secondaryAvg.english_maths_strong_pass_pct.toFixed(0)}%</div>
-                )}
-              </div>
-            )}
-            {latestResults.english_maths_standard_pass_pct != null && (
-              <div className={styles.heroStatCard}>
-                <div className={styles.heroStatLabel}>
-                  English &amp; Maths Grade 4+
-                  <MetricTooltip metricKey="english_maths_standard_pass_pct" />
-                </div>
-                <div className={styles.heroStatValue}>
-                  {formatPercentage(latestResults.english_maths_standard_pass_pct)}
-                  {!suppressComparison && secondaryAvg.english_maths_standard_pass_pct != null && (
-                    <DeltaChip
-                      value={latestResults.english_maths_standard_pass_pct}
-                      baseline={secondaryAvg.english_maths_standard_pass_pct}
-                      unit="pts"
-                      size="sm"
-                    />
-                  )}
-                </div>
-                {!suppressComparison && secondaryAvg.english_maths_standard_pass_pct != null && (
-                  <div className={styles.heroStatHint}>England avg: {secondaryAvg.english_maths_standard_pass_pct.toFixed(0)}%</div>
-                )}
-              </div>
-            )}
-          </div>
-
-          {/* Attainment 8 visual bar (0–80 scale). This viz is explicitly
-              "school vs national", so it's dropped for special schools where
-              that comparison isn't meaningful. */}
-          {!suppressComparison && latestResults.attainment_8_score != null && (
-            <div className={styles.att8Viz}>
-              <div className={styles.att8VizLabel}>Attainment 8 — school vs national</div>
-              <div className={styles.att8VizTrack}>
-                <div
-                  className={styles.att8VizFill}
-                  style={{ width: `${Math.min((latestResults.attainment_8_score / 80) * 100, 100)}%` }}
-                />
-                {secondaryAvg.attainment_8_score != null && (
-                  <div
-                    className={styles.att8VizNatLine}
-                    style={{ left: `${(secondaryAvg.attainment_8_score / 80) * 100}%` }}
-                  >
-                    <div className={styles.att8VizNatPill}>
-                      Nat avg {secondaryAvg.attainment_8_score.toFixed(1)}
-                    </div>
-                  </div>
-                )}
-              </div>
-              <div className={styles.att8VizTicks}>
-                <span>0</span><span>20</span><span>40</span><span>60</span><span>80</span>
-              </div>
-            </div>
-          )}
-
-          {/* Progress 8 number line with CI */}
-          {latestResults.progress_8_score != null && !p8Suspended && (
-            <div className={styles.p8Viz}>
-              <div className={styles.p8VizLabel}>Progress 8 — relative to national baseline (0)</div>
-              {(() => {
-                const p8 = latestResults.progress_8_score!;
-                const lo = latestResults.progress_8_lower_ci ?? p8;
-                const hi = latestResults.progress_8_upper_ci ?? p8;
-                const range = 6; // −3 to +3
-                const toX = (v: number) => `${Math.min(Math.max(((v + 3) / range) * 100, 0), 100)}%`;
-                return (
-                  <div className={styles.p8VizTrack}>
-                    {/* CI band */}
-                    <div
-                      className={styles.p8VizCi}
-                      style={{ left: toX(lo), width: `calc(${toX(hi)} - ${toX(lo)})` }}
-                    />
-                    {/* Zero line */}
-                    <div className={styles.p8VizZero} style={{ left: toX(0) }} />
-                    {/* Score dot */}
-                    <div
-                      className={`${styles.p8VizDot} ${p8 < 0 ? styles.p8VizDotNeg : ''}`}
-                      style={{ left: toX(p8) }}
-                    />
-                  </div>
-                );
-              })()}
-              <div className={styles.p8VizTicks}>
-                <span>−3</span><span>−2</span><span>−1</span><span>0</span><span>+1</span><span>+2</span><span>+3</span>
-              </div>
-            </div>
-          )}
-
-          {/* Progress 8 component breakdown */}
-          {(latestResults.progress_8_english != null || latestResults.progress_8_maths != null ||
-            latestResults.progress_8_ebacc != null || latestResults.progress_8_open != null) && (
-            <>
-              <h3 className={styles.subSectionTitle}>Attainment 8 Components (Progress 8 contribution)</h3>
-              <div className={styles.metricTable}>
-                {[
-                  { label: 'English', val: latestResults.progress_8_english },
-                  { label: 'Maths', val: latestResults.progress_8_maths },
-                  { label: 'EBacc subjects', val: latestResults.progress_8_ebacc },
-                  { label: 'Open (other GCSEs)', val: latestResults.progress_8_open },
-                ].filter(r => r.val != null).map(({ label, val }) => (
-                  <div key={label} className={styles.metricRow}>
-                    <span className={styles.metricName}>{label}</span>
-                    <span className={`${styles.metricValue} ${progressClass(val, styles)}`}>
-                      {formatProgress(val!)}
-                    </span>
-                  </div>
-                ))}
-              </div>
-            </>
-          )}
-
-          {/* EBacc */}
-          {(latestResults.ebacc_entry_pct != null || latestResults.ebacc_standard_pass_pct != null) && (
-            <>
-              <h3 className={styles.subSectionTitle} style={{ marginTop: '1rem' }}>
-                English Baccalaureate (EBacc)
-                <MetricTooltip metricKey="ebacc_entry_pct" />
-              </h3>
-              <div className={styles.metricTable}>
-                {latestResults.ebacc_entry_pct != null && (
-                  <div className={styles.metricRow}>
-                    <span className={styles.metricName}>Pupils entered for EBacc</span>
-                    <span className={styles.metricValue}>{formatPercentage(latestResults.ebacc_entry_pct)}</span>
-                  </div>
-                )}
-                {latestResults.ebacc_standard_pass_pct != null && (
-                  <div className={styles.metricRow}>
-                    <span className={styles.metricName}>EBacc Grade 4+</span>
-                    <span className={styles.metricValue}>{formatPercentage(latestResults.ebacc_standard_pass_pct)}</span>
-                  </div>
-                )}
-                {latestResults.ebacc_strong_pass_pct != null && (
-                  <div className={styles.metricRow}>
-                    <span className={styles.metricName}>EBacc Grade 5+</span>
-                    <span className={styles.metricValue}>{formatPercentage(latestResults.ebacc_strong_pass_pct)}</span>
-                  </div>
-                )}
-                {latestResults.ebacc_avg_score != null && (
-                  <div className={styles.metricRow}>
-                    <span className={styles.metricName}>EBacc average point score</span>
-                    <span className={styles.metricValue}>{latestResults.ebacc_avg_score.toFixed(2)}</span>
-                  </div>
-                )}
-              </div>
-            </>
-          )}
-
-        </section>
-      )}
-
-      {/* ── Admissions ─────────────────────────────────── */}
-      {admissions && (
-        <section id="admissions" className={styles.card}>
-          <h2 className={styles.sectionTitle}>Admissions</h2>
-
-          {admissionsTag && (
-            <div className={`${styles.admissionsTypeBadge} ${admissionsTag === 'Selective' ? styles.admissionsSelective : styles.admissionsFaith}`}>
-              <strong>{admissionsTag}</strong>{' '}
-              {admissionsTag === 'Selective'
-                ? '— Entry to this school is by selective examination (e.g. 11+).'
-                : `— This school has a faith-based admissions priority (${schoolInfo.religious_denomination}).`}
-            </div>
-          )}
-
-          <div className={styles.metricsGrid}>
-            {admissions.places_offered != null && (
-              <div className={styles.metricCard}>
-                <div className={styles.metricLabel}>Year 7 places offered</div>
-                <div className={styles.metricValue}>{admissions.places_offered}</div>
-              </div>
-            )}
-            {admissions.total_applications != null && (
-              <div className={styles.metricCard}>
-                <div className={styles.metricLabel}>Total applications</div>
-                <div className={styles.metricValue}>{admissions.total_applications.toLocaleString()}</div>
-              </div>
-            )}
-            {admissions.first_preference_applications != null && (
-              <div className={styles.metricCard}>
-                <div className={styles.metricLabel}>1st preference applications</div>
-                <div className={styles.metricValue}>{admissions.first_preference_applications.toLocaleString()}</div>
-              </div>
-            )}
-            {admissions.first_preference_offer_pct != null && (
-              <div className={styles.metricCard}>
-                <div className={styles.metricLabel}>Families who got their first choice</div>
-                <div className={styles.metricValue}>{formatPercentage(admissions.first_preference_offer_pct)}</div>
-              </div>
-            )}
-          </div>
-          {admissions.oversubscribed != null && (
-            <div className={`${styles.admissionsBadge} ${admissions.oversubscribed ? styles.statusWarn : styles.statusGood}`}>
-              {admissions.oversubscribed
-                ? '⚠ Applications exceeded places last year'
-                : '✓ Places were available last year'}
-            </div>
-          )}
-
-          <p className={styles.sectionSubtitle} style={{ marginTop: '1rem' }}>
-            Historical distance cut-off data is not available for this school. Contact the admissions authority for oversubscription criteria details.
-          </p>
-
-          {hasSixthForm && (
-            <div className={styles.sixthFormNote}>
-              This school has a sixth form (Post-16 provision). Post-16 destination data coming soon.
-            </div>
-          )}
-        </section>
-      )}
-
-      {/* ── History table ──────────────────────────────── */}
-      {yearlyData.length > 1 && (
-        <section id="history" className={styles.card}>
-          <h2 className={styles.sectionTitle}>Historical Results</h2>
-          {yearlyData.length > 0 && (
-            <>
-              <h3 className={styles.subSectionTitle} style={{ marginTop: '1.25rem' }}>Results Over Time</h3>
-              <div className={styles.chartContainer}>
-                <PerformanceChart
-                  data={yearlyData}
-                  schoolName={schoolInfo.school_name}
-                  isSecondary={true}
-                  nationalAtt8Avg={suppressComparison ? null : heroAtt8Nat}
-                  nationalByYear={suppressComparison ? undefined : nationalAvg?.by_year}
-                />
-              </div>
-            </>
-          )}
-          <details className={styles.historyDisclosure}>
-            <summary className={styles.historyToggle}>View raw year-by-year data</summary>
-            <div className={styles.tableWrapper}>
-              <table className={styles.dataTable}>
-                <thead>
-                  <tr>
-                    <th>Year</th>
-                    <th>Attainment 8</th>
-                    <th>Progress 8</th>
-                    <th>Eng &amp; Maths 4+</th>
-                    <th>EBacc entry %</th>
-                  </tr>
-                </thead>
-                <tbody>
-                  {yearlyData.map((result) => (
-                    <tr key={result.year}>
-                      <td className={styles.yearCell}>{formatAcademicYear(result.year)}</td>
-                      <td>{result.attainment_8_score != null ? result.attainment_8_score.toFixed(1) : '-'}</td>
-                      <td>{result.progress_8_score != null ? formatProgress(result.progress_8_score) : '-'}</td>
-                      <td>{result.english_maths_standard_pass_pct != null ? formatPercentage(result.english_maths_standard_pass_pct) : '-'}</td>
-                      <td>{result.ebacc_entry_pct != null ? formatPercentage(result.ebacc_entry_pct) : '-'}</td>
-                    </tr>
-                  ))}
-                </tbody>
-              </table>
-            </div>
-          </details>
-        </section>
-      )}
-      {/* ── Wellbeing ──────────────────────────────────── */}
-      {hasWellbeing && (
-        <section id="wellbeing" className={styles.card}>
-          <h2 className={styles.sectionTitle}>Wellbeing &amp; Context</h2>
-
-          {/* SEN */}
-          {(latestResults?.sen_support_pct != null || latestResults?.sen_ehcp_pct != null) && (
-            <>
-              <h3 className={styles.subSectionTitle}>Special Educational Needs (SEN)</h3>
-              <div className={styles.heroStatGrid}>
-                {latestResults?.sen_support_pct != null && (
-                  <div className={styles.heroStatCard}>
-                    <div className={styles.heroStatLabel}>
-                      SEN support
-                      <MetricTooltip metricKey="sen_support_pct" />
-                    </div>
-                    <div className={styles.heroStatValue}>{formatPercentage(latestResults.sen_support_pct)}</div>
-                    <div className={styles.heroStatHint}>Without an EHCP</div>
-                  </div>
-                )}
-                {latestResults?.sen_ehcp_pct != null && (
-                  <div className={styles.heroStatCard}>
-                    <div className={styles.heroStatLabel}>
-                      Pupils with EHCP
-                      <MetricTooltip metricKey="sen_ehcp_pct" />
-                    </div>
-                    <div className={styles.heroStatValue}>{formatPercentage(latestResults.sen_ehcp_pct)}</div>
-                    <div className={styles.heroStatHint}>Education, Health and Care Plan</div>
-                  </div>
-                )}
-                {(() => {
-                  const total = census?.total_pupils ?? schoolInfo.total_pupils ?? latestResults?.total_pupils ?? null;
-                  if (total == null) return null;
-                  const female = census?.female_pupils ?? null;
-                  const male = census?.male_pupils ?? null;
-                  const isMixed = schoolInfo.gender === 'Mixed' || schoolInfo.gender == null;
-                  const hasSplit = isMixed && female != null && male != null && female + male > 0;
-                  const sum = hasSplit ? female! + male! : 0;
-                  const girlsPct = hasSplit ? Math.round((female! / sum) * 100) : 0;
-                  const boysPct = hasSplit ? 100 - girlsPct : 0;
-                  return (
-                    <div className={styles.heroStatCard}>
-                      <div className={styles.heroStatLabel}>Total pupils</div>
-                      <div className={styles.heroStatValue}>{total.toLocaleString()}</div>
-                      {hasSplit && (
-                        <>
-                          <div
-                            className={styles.genderBar}
-                            role="img"
-                            aria-label={`Gender split: ${girlsPct}% girls, ${boysPct}% boys`}
-                          >
-                            <span className={styles.genderBarGirls} style={{ width: `${girlsPct}%` }} />
-                            <span className={styles.genderBarBoys} style={{ width: `${boysPct}%` }} />
-                          </div>
-                          <div className={styles.genderSplitHint}>
-                            <span className={styles.genderSplitGirls}>{girlsPct}% girls</span>
-                            <span className={styles.genderSplitSep}> · </span>
-                            <span className={styles.genderSplitBoys}>{boysPct}% boys</span>
-                          </div>
-                        </>
-                      )}
-                      {schoolInfo.capacity != null && !hasSplit && (
-                        <div className={styles.heroStatHint}>Capacity: {schoolInfo.capacity}</div>
-                      )}
-                    </div>
-                  );
-                })()}
-              </div>
-            </>
-          )}
-
-          {/* Deprivation */}
-          {hasDeprivation && deprivation && (
-            <>
-              <h3 className={styles.subSectionTitle} style={{ marginTop: '1.25rem' }}>
-                Local Area Context
-                <MetricTooltip metricKey="idaci_decile" />
-              </h3>
-              <div className={styles.deprivationDots}>
-                {Array.from({ length: 10 }, (_, i) => (
-                  <div
-                    key={i}
-                    className={`${styles.deprivationDot} ${i < deprivation.idaci_decile! ? styles.deprivationDotFilled : ''}`}
-                    title={`Decile ${i + 1}`}
-                  />
-                ))}
-              </div>
-              <div className={styles.deprivationScaleLabel}>
-                <span>Most deprived</span>
-                <span>Least deprived</span>
-              </div>
-              <p className={styles.deprivationDesc}>{deprivationDesc(deprivation.idaci_decile!)}</p>
-            </>
-          )}
-        </section>
-      )}
-
-      {/* ── Finances ───────────────────────────────────── */}
-      {hasFinance && finance && (
-        <section id="finances" className={styles.card}>
-          <h2 className={styles.sectionTitle}>School Finances ({formatAcademicYear(finance.year)})</h2>
-          <p className={styles.sectionSubtitle}>
-            Per-pupil spending shows how much the school has to spend on each child&apos;s education.
-          </p>
-          <div className={styles.metricsGrid}>
-            <div className={styles.metricCard}>
-              <div className={styles.metricLabel}>Total spend per pupil per year</div>
-              <div className={styles.metricValue}>£{Math.round(finance.per_pupil_spend!).toLocaleString()}</div>
-              <div className={styles.metricHint}>How much the school has to spend on each pupil annually</div>
-            </div>
-            {finance.teacher_cost_pct != null && (
-              <div className={styles.metricCard}>
-                <div className={styles.metricLabel}>Share of budget spent on teachers</div>
-                <div className={styles.metricValue}>{finance.teacher_cost_pct.toFixed(1)}%</div>
-              </div>
-            )}
-            {finance.staff_cost_pct != null && (
-              <div className={styles.metricCard}>
-                <div className={styles.metricLabel}>Share of budget spent on all staff</div>
-                <div className={styles.metricValue}>{finance.staff_cost_pct.toFixed(1)}%</div>
-              </div>
-            )}
-            {finance.premises_cost_pct != null && (
-              <div className={styles.metricCard}>
-                <div className={styles.metricLabel}>Share of budget spent on premises</div>
-                <div className={styles.metricValue}>{finance.premises_cost_pct.toFixed(1)}%</div>
-              </div>
-            )}
-          </div>
-        </section>
-      )}
-
-    </div>
-  );
-}

nextjs-app/components/school/AdmissionsSection.tsx

@@ -11,15 +11,14 @@
  * toggle renders at all, so such pages ship zero admissions JavaScript.
  */
 
-import dynamic from 'next/dynamic';
 import type { ReactNode } from 'react';
 import type { SchoolAdmissions } from '@/lib/types';
 import { formatAcademicYear, formatPercentage } from '@/lib/utils';
 import { summariseAdmissions } from '@/lib/compareLogic';
 import { Section, sectionStyles as styles } from './sectionShared';
 import { AdmissionsViewToggle } from './AdmissionsViewToggle';
+import { AdmissionsTrendChart } from './charts';
 
-const AdmissionsTrendChart = dynamic(() => import('../AdmissionsTrendChart'), { ssr: false });
 
 export function AdmissionsSection({
   admissions,

nextjs-app/components/school/HistorySection.tsx

@@ -4,16 +4,10 @@
  * were only 40% similar). Server component.
  */
 
-import dynamic from 'next/dynamic';
 import type { School, SchoolResult, NationalAverages } from '@/lib/types';
 import { formatPercentage, formatProgress, formatAcademicYear } from '@/lib/utils';
 import { Section, sectionStyles as styles } from './sectionShared';
-
+import { PerformanceChart, SatsChart } from './charts';
-const PerformanceChart = dynamic(
-  () => import('../PerformanceChart').then((m) => m.PerformanceChart),
-  { ssr: false },
-);
-const SatsChart = dynamic(() => import('../SatsChart'), { ssr: false });
 
 export function HistorySection({
   yearlyData, schoolInfo, nationalAvg, primaryAvg, secondaryAvg,

nextjs-app/components/school/PrimarySchoolSections.tsx

@@ -0,0 +1,139 @@
+/**
+ * PrimarySchoolSections — the section sequence for primary and all-through
+ * detail pages. Server component.
+ *
+ * All-through schools route here rather than to SecondarySchoolSections,
+ * because this list renders BOTH the KS2 and KS4 blocks (ResultsSection and
+ * HistorySection branch on isAllThrough); the secondary list is KS4-only and
+ * would silently drop their SATs data.
+ *
+ * The render conditions here MUST match buildNavItems in lib/schoolSections,
+ * or the sticky nav will link to sections that do not exist.
+ */
+
+import type {
+  School, SchoolResult, AbsenceData, OfstedInspection, SchoolCensus,
+  SchoolAdmissions, SchoolDeprivation, SchoolFinance, NationalAverages,
+} from '@/lib/types';
+import { ofstedLegacyAreas } from '@/lib/utils';
+import type { SchoolFlags } from '@/lib/schoolSections';
+import { OfstedSection } from './OfstedSection';
+import { ResultsSection } from './ResultsSection';
+import { AdmissionsSection } from './AdmissionsSection';
+import { InclusionSection } from './InclusionSection';
+import { HistorySection } from './HistorySection';
+import { SchoolLifeSection } from './SchoolLifeSection';
+import { LocalAreaSection } from './LocalAreaSection';
+import { FinancesSection } from './FinancesSection';
+
+export interface PrimarySchoolSectionsProps {
+  schoolInfo: School;
+  yearlyData: SchoolResult[];
+  absenceData: AbsenceData | null;
+  ofsted: OfstedInspection | null;
+  census: SchoolCensus | null;
+  admissions: SchoolAdmissions | null;
+  admissionsHistory: SchoolAdmissions[];
+  deprivation: SchoolDeprivation | null;
+  finance: SchoolFinance | null;
+  nationalAvg: NationalAverages | null;
+  flags: SchoolFlags;
+}
+
+export function PrimarySchoolSections({
+  schoolInfo, yearlyData, absenceData, ofsted, census,
+  admissions, admissionsHistory, deprivation, finance, nationalAvg, flags,
+}: PrimarySchoolSectionsProps) {
+  const primaryAvg = nationalAvg?.primary ?? {};
+  const secondaryAvg = nationalAvg?.secondary ?? {};
+
+  const isReportCard = !!(ofsted?.report_card && Object.keys(ofsted.report_card).length > 0);
+  // Report cards are dated by their own inspection (rc_inspection_date), never
+  // the legacy inspection_date (report cards exist only from Nov 2025).
+  const ofstedInspectedDate = isReportCard
+    ? ofsted?.rc_inspection_date ?? null
+    : ofsted?.inspection_date ?? null;
+  const oeifAreas = ofsted ? ofstedLegacyAreas(ofsted) : [];
+  const oeifAllSameGrade =
+    !!ofsted &&
+    !isReportCard &&
+    oeifAreas.length >= 3 &&
+    oeifAreas.every((a) => a.value === ofsted.overall_effectiveness);
+
+  return (
+    <>
+      {ofsted && (
+        <OfstedSection
+          ofsted={ofsted}
+          urn={schoolInfo.urn}
+          isReportCard={isReportCard}
+          ofstedInspectedDate={ofstedInspectedDate}
+          oeifAllSameGrade={oeifAllSameGrade}
+          oeifAreas={oeifAreas}
+          variant="primary"
+        />
+      )}
+
+      {flags.hasAnyResults && flags.latestResults && (
+        <ResultsSection
+          latestResults={flags.latestResults}
+          schoolInfo={schoolInfo}
+          primaryAvg={primaryAvg}
+          secondaryAvg={secondaryAvg}
+          isAllThrough={flags.isAllThrough}
+          isSecondary={flags.isSecondary}
+          isSpecial={flags.isSpecial}
+          hasKS2Results={flags.hasKS2Results}
+          hasKS4Results={flags.hasKS4Results}
+          ks2Placeholder={flags.ks2Placeholder}
+          suppressKs2Comparison={flags.suppressKs2Comparison}
+          suppressKs4Comparison={flags.suppressKs4Comparison}
+        />
+      )}
+
+      {admissions && (
+        <AdmissionsSection
+          admissions={admissions}
+          admissionsHistory={admissionsHistory}
+          isAllThrough={flags.isAllThrough}
+        />
+      )}
+
+      {flags.hasInclusionData && (
+        <InclusionSection
+          latestResults={flags.latestResults}
+          census={census}
+          hasGenderSplit={flags.hasGenderSplit}
+          primaryAvg={primaryAvg}
+        />
+      )}
+
+      {yearlyData.length > 0 && (
+        <HistorySection
+          yearlyData={yearlyData}
+          schoolInfo={schoolInfo}
+          nationalAvg={nationalAvg}
+          primaryAvg={primaryAvg}
+          secondaryAvg={secondaryAvg}
+          isAllThrough={flags.isAllThrough}
+          isPrimary={flags.isPrimary}
+          isSecondary={flags.isSecondary}
+          hasKS2Results={flags.hasKS2Results}
+          hasKS4Results={flags.hasKS4Results}
+          suppressKs2Comparison={flags.suppressKs2Comparison}
+          suppressKs4Comparison={flags.suppressKs4Comparison}
+        />
+      )}
+
+      {flags.hasSchoolLife && (
+        <SchoolLifeSection absenceData={absenceData} primaryAvg={primaryAvg} />
+      )}
+
+      {flags.hasDeprivation && deprivation && (
+        <LocalAreaSection deprivation={deprivation} />
+      )}
+
+      {flags.hasFinance && finance && <FinancesSection finance={finance} />}
+    </>
+  );
+}

nextjs-app/components/school/ResultsSection.tsx

@@ -3,15 +3,14 @@
  * Primary and all-through pages. Server component.
  */
 
-import dynamic from 'next/dynamic';
 import type { School, SchoolResult } from '@/lib/types';
 import { formatPercentage, formatProgress, formatAcademicYear } from '@/lib/utils';
 import { MetricTooltip } from '../MetricTooltip';
 import { DeltaChip } from '../DeltaChip';
 import { SpecialSchoolNote } from '../SpecialSchoolNote';
 import { Section, sectionStyles as styles, progressClass } from './sectionShared';
+import { SatsChart } from './charts';
 
-const SatsChart = dynamic(() => import('../SatsChart'), { ssr: false });
 
 export function ResultsSection({
   latestResults, schoolInfo, primaryAvg, secondaryAvg,

nextjs-app/components/school/SchoolDetailShell.module.css

@@ -0,0 +1,669 @@
+/* Styles for SchoolDetailShell — the interactive chrome of a detail page.
+   Derived from the classes the shell's JSX references; the section styles
+   live in components/school/schoolSections.module.css. Classes used by both
+   appear in both files, which is correct: CSS Modules hash them per-file. */
+
+.container {
+    width: 100%;
+    min-width: 0;
+    max-width: 100%;
+}
+
+
+/* Standalone back link, sits above the header card on the page background. */
+.topBack {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.4rem;
+    margin: 0 0 0.75rem;
+    padding: 0.25rem 0;
+    font-size: 1.0625rem;
+    font-weight: 600;
+    color: var(--accent-coral-dark, #b04a2e);
+    background: none;
+    border: none;
+    cursor: pointer;
+    line-height: 1.2;
+    transition: color 0.15s ease;
+}
+
+
+.topBack:hover {
+    color: var(--accent-coral-dark, #c85a3e);
+    text-decoration: underline;
+    text-underline-offset: 2px;
+}
+
+
+/* Header Section */
+.header {
+    position: relative;
+    background: var(--bg-card, white);
+    border: 1px solid var(--border-color, #e5dfd5);
+    border-radius: 10px;
+    /* Padding lives on .headerContent so the map band can bleed to the edges. */
+    padding: 0;
+    margin-bottom: 0;
+    box-shadow: var(--shadow-soft);
+    overflow: hidden;
+}
+
+
+.headerContent {
+    display: flex;
+    justify-content: space-between;
+    align-items: flex-start;
+    gap: 1.5rem;
+    padding: 1.25rem 1.5rem;
+}
+
+
+/* With a map band above, slide the title up under the fade so map and title
+   read as one object; the Compare button floats glassy over the map. */
+.headerHasMap .headerContent {
+    padding-top: 0;
+    margin-top: -0.5rem;
+}
+
+
+/* The title (not the whole content row) rises above the map fade. Keeping
+   .headerContent unpositioned matters: .actions must anchor to .header so it
+   floats over the map band, not over the title. */
+.headerHasMap .titleSection {
+    position: relative;
+    z-index: 3;
+}
+
+
+.headerHasMap .actions {
+    position: absolute;
+    top: 14px;
+    right: 14px;
+    z-index: 6;
+    margin: 0;
+    /* Beat the mobile `.actions { width: 100% }` rule — a floating button
+       must never stretch across the title. */
+    width: auto;
+}
+
+
+.headerHasMap .actions .btnAdd {
+    background: rgba(255, 255, 255, 0.9);
+    color: var(--accent-coral-dark, #b04a2e);
+    border-color: transparent;
+    -webkit-backdrop-filter: blur(6px);
+    backdrop-filter: blur(6px);
+    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.16);
+}
+
+
+.headerHasMap .actions .btnAdd:hover {
+    background: #fff;
+}
+
+
+/* Full label by default; phones over the map get an icon-only button
+   (same compact treatment as the section-nav compare icon). */
+.btnCompareGlyph {
+    display: none;
+}
+
+
+/* Inline "View on map ↗" trigger next to the address. */
+.mapLink {
+    border: none;
+    background: none;
+    padding: 0;
+    font: inherit;
+    font-weight: 600;
+    color: var(--accent-coral-dark, #b04a2e);
+    cursor: pointer;
+    white-space: nowrap;
+}
+
+
+.mapLink:hover {
+    color: var(--accent-coral-dark, #c45a3f);
+    text-decoration: underline;
+    text-underline-offset: 2px;
+}
+
+
+.titleSection {
+    flex: 1;
+}
+
+
+.schoolName {
+    font-size: clamp(2rem, 5vw, 3.25rem);
+    font-weight: 700;
+    color: var(--text-primary, #1a1612);
+    margin-bottom: 0.5rem;
+    line-height: 1.1;
+    letter-spacing: -0.01em;
+    font-family: var(--font-playfair), "Playfair Display", serif;
+}
+
+
+.meta {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.5rem;
+    margin-bottom: 0.5rem;
+}
+
+
+.metaItem {
+    font-size: 0.8125rem;
+    color: var(--text-secondary, #5c564d);
+    padding: 0.125rem 0.5rem;
+    background: var(--bg-secondary, #f3ede4);
+    border-radius: 3px;
+}
+
+
+.address {
+    font-size: 0.875rem;
+    color: var(--text-muted, #8a847a);
+    margin: 0 0 0.75rem;
+}
+
+
+/* Expanded header details (headteacher, website, trust, pupils) */
+.headerDetails {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.5rem 1.25rem;
+    margin-top: 0.5rem;
+}
+
+
+.headerDetail {
+    font-size: 0.8125rem;
+    color: var(--text-secondary, #5c564d);
+}
+
+
+.headerDetail strong {
+    color: var(--text-primary, #1a1612);
+    font-weight: 600;
+}
+
+
+.headerDetail a {
+    color: var(--accent-teal, #2d7d7d);
+    text-decoration: none;
+}
+
+
+.headerDetail a:hover {
+    text-decoration: underline;
+}
+
+
+/* "Show all details" reveal — only rendered on mobile/tablet, where the
+   header details block is collapsed below the fold. Hidden on desktop. */
+.detailsToggle {
+    display: none;
+    align-items: center;
+    gap: 0.25rem;
+    margin-top: 0.5rem;
+    padding: 0;
+    background: none;
+    border: none;
+    font-size: 0.8125rem;
+    font-weight: 600;
+    color: var(--accent-teal, #2d7d7d);
+    cursor: pointer;
+}
+
+
+.actions {
+    display: flex;
+    gap: 0.5rem;
+    flex-shrink: 0;
+    align-self: center;
+}
+
+
+.btnAdd,
+.btnRemove {
+    padding: 0.75rem 1.25rem;
+    font-size: 0.9375rem;
+    font-weight: 600;
+    border: none;
+    border-radius: 8px;
+    cursor: pointer;
+    transition: all 0.2s ease;
+    white-space: nowrap;
+    box-shadow: var(--shadow-soft, 0 2px 8px rgba(26, 22, 18, 0.08));
+}
+
+
+.btnAdd {
+    background: var(--accent-coral-dark, #b04a2e);
+    color: white;
+}
+
+
+.btnAdd:hover {
+    background: var(--accent-coral-darker, #9c3f26);
+    transform: translateY(-1px);
+}
+
+
+.btnRemove {
+    background: var(--accent-teal, #2d7d7d);
+    color: white;
+}
+
+
+.btnRemove:hover {
+    opacity: 0.9;
+}
+
+
+/* ── Sticky Section Navigation ──────────────────────── */
+/* Docks directly under the global header; Back and "All" stay pinned while
+   only the section links scroll. */
+.sectionNav {
+    position: sticky;
+    top: 64px; /* global header height on desktop */
+    z-index: 10;
+    background: var(--bg-card, white);
+    border: 1px solid var(--border-color, #e5dfd5);
+    border-top: none;
+    border-radius: 0 0 10px 10px;
+    padding: 0.5rem 0.75rem;
+    margin-bottom: 1rem;
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+}
+
+
+.sectionNavBack {
+    flex: none;
+    display: inline-flex;
+    align-items: center;
+    gap: 0.3rem;
+    padding: 0.3rem 0.625rem;
+    font-size: 0.75rem;
+    font-weight: 600;
+    color: var(--accent-coral-dark, #b04a2e);
+    background: none;
+    border: 1px solid var(--border-color, #e5dfd5);
+    border-radius: 4px;
+    cursor: pointer;
+    white-space: nowrap;
+    transition: all 0.15s ease;
+}
+
+
+.sectionNavBack:hover {
+    background: var(--bg-secondary, #f3ede4);
+    border-color: var(--accent-coral, #e07256);
+}
+
+
+/* The scrolling middle: section links only. */
+.sectionNavLinks {
+    flex: 1;
+    min-width: 0;
+    display: flex;
+    align-items: center;
+    gap: 0.375rem;
+    overflow-x: auto;
+    white-space: nowrap;
+    -webkit-overflow-scrolling: touch;
+    scrollbar-width: none;
+    scroll-snap-type: x proximity;
+    scroll-padding-inline: 0.5rem;
+}
+
+
+.sectionNavLinks::-webkit-scrollbar {
+    display: none;
+}
+
+
+.sectionNavLink {
+    display: inline-flex;
+    align-items: center;
+    padding: 0.3rem 0.625rem;
+    font-size: 0.75rem;
+    font-weight: 500;
+    color: var(--text-secondary, #5c564d);
+    text-decoration: none;
+    border-radius: 4px;
+    transition: all 0.15s ease;
+    white-space: nowrap;
+    scroll-snap-align: start;
+}
+
+
+.sectionNavLink:hover {
+    background: var(--bg-secondary, #f3ede4);
+    color: var(--text-primary, #1a1612);
+}
+
+
+.sectionNavLinkActive {
+    background: var(--accent-coral-dark, #b04a2e);
+    color: white;
+    font-weight: 600;
+}
+
+
+.sectionNavLinkActive:hover {
+    background: var(--accent-coral-dark, #c45a3f);
+    color: white;
+}
+
+
+/* ── Mobile: the scrolling links collapse into one "section" menu button ──
+   (hidden on desktop, where the links fit). */
+.sectionNavMenu {
+    display: none; /* shown only ≤640px */
+    flex: 1;
+    min-width: 0;
+    align-items: center;
+    justify-content: space-between;
+    gap: 0.5rem;
+    min-height: 38px;
+    padding: 0.34rem 0.7rem;
+    background: var(--bg-secondary, #f3ede4);
+    border: 1px solid var(--border-color, #e5dfd5);
+    border-radius: 8px;
+    cursor: pointer;
+    font-family: var(--font-dm-sans), "DM Sans", sans-serif;
+    color: var(--text-primary, #1a1612);
+}
+
+
+.sectionNavMenuCur {
+    display: flex;
+    align-items: center;
+    gap: 0.45rem;
+    min-width: 0;
+}
+
+
+.sectionNavMenuEyebrow {
+    flex: none;
+    font-size: 0.64rem;
+    font-weight: 600;
+    letter-spacing: 0.04em;
+    text-transform: uppercase;
+    color: var(--text-muted, #6d685f);
+}
+
+
+.sectionNavMenuNow {
+    font-size: 0.85rem;
+    font-weight: 600;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+
+.sectionNavMenuChev {
+    flex: none;
+    color: var(--text-muted, #6d685f);
+    font-size: 0.7rem;
+}
+
+
+/* Compact icon version of the Compare CTA, used on mobile. */
+.sectionNavCompareIcon {
+    display: none; /* shown only ≤640px */
+    position: relative;
+    flex: none;
+    align-items: center;
+    justify-content: center;
+    width: 38px;
+    height: 38px;
+    border-radius: 9px;
+    border: 1px solid var(--accent-coral-dark, #b04a2e);
+    background: var(--accent-coral-dark, #b04a2e);
+    color: white;
+    cursor: pointer;
+    transition: background 0.15s ease, border-color 0.15s ease;
+}
+
+
+.sectionNavCompareIcon svg {
+    width: 19px;
+    height: 19px;
+}
+
+
+.sectionNavCompareBadge {
+    position: absolute;
+    top: -5px;
+    right: -5px;
+    width: 16px;
+    height: 16px;
+    border-radius: 50%;
+    background: var(--bg-card, white);
+    color: var(--accent-coral-dark, #c45a3f);
+    border: 1.5px solid var(--accent-coral, #e07256);
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 0.7rem;
+    font-weight: 800;
+    line-height: 1;
+}
+
+
+.sectionNavCompareIconIn {
+    background: var(--bg-card, white);
+    border-color: var(--accent-teal, #2d7d7d);
+    color: var(--accent-teal, #2d7d7d);
+}
+
+
+/* Compare CTA carried into the bar once the hero's button scrolls away. */
+.sectionNavCompare {
+    flex: none;
+    display: inline-flex;
+    align-items: center;
+    padding: 0.34rem 0.7rem;
+    font-size: 0.75rem;
+    font-weight: 600;
+    color: white;
+    background: var(--accent-coral-dark, #b04a2e);
+    border: 1px solid var(--accent-coral-dark, #b04a2e);
+    border-radius: 999px;
+    cursor: pointer;
+    white-space: nowrap;
+    transition: all 0.15s ease;
+}
+
+
+.sectionNavCompare:hover {
+    background: var(--accent-coral-darker, #9c3f26);
+    border-color: var(--accent-coral-darker, #9c3f26);
+}
+
+
+.sectionNavCompareIn {
+    background: var(--bg-card, white);
+    color: var(--accent-teal, #2d7d7d);
+    border-color: var(--accent-teal, #2d7d7d);
+}
+
+
+.sectionNavCompareIn:hover {
+    background: var(--bg-secondary, #f3ede4);
+    border-color: var(--accent-teal, #2d7d7d);
+}
+
+
+/* "All ▾" jump menu (desktop). */
+.sectionNavAll {
+    flex: none;
+    display: inline-flex;
+    align-items: center;
+    gap: 0.25rem;
+    padding: 0.34rem 0.65rem;
+    font-size: 0.75rem;
+    font-weight: 600;
+    color: var(--text-primary, #1a1612);
+    background: var(--bg-secondary, #f3ede4);
+    border: none;
+    border-radius: 999px;
+    cursor: pointer;
+    white-space: nowrap;
+    transition: background 0.15s ease;
+}
+
+
+.sectionNavAll:hover {
+    background: var(--border-color, #e5dfd5);
+}
+
+
+.sectionsBackdrop {
+    position: fixed;
+    inset: 0;
+    z-index: 1500;
+    background: rgba(26, 22, 18, 0.28);
+}
+
+
+.sectionsPanel {
+    position: absolute;
+    top: calc(100% + 6px);
+    right: 0;
+    z-index: 1600;
+    width: 230px;
+    max-height: min(70vh, 460px);
+    overflow-y: auto;
+    background: var(--bg-card, white);
+    border: 1px solid var(--border-color, #e5dfd5);
+    border-radius: 12px;
+    box-shadow: 0 18px 44px rgba(26, 22, 18, 0.2);
+    padding: 0.35rem;
+}
+
+
+.sectionsPanelHead {
+    font-family: var(--font-playfair), "Playfair Display", Georgia, serif;
+    font-size: 0.9rem;
+    font-weight: 600;
+    color: var(--text-primary, #1a1612);
+    padding: 0.4rem 0.6rem 0.5rem;
+}
+
+
+.sectionsItem {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    gap: 0.5rem;
+    padding: 0.55rem 0.6rem;
+    border-radius: 8px;
+    font-size: 0.85rem;
+    color: var(--text-secondary, #5c564d);
+    text-decoration: none;
+    transition: background 0.12s ease;
+}
+
+
+.sectionsItem:hover {
+    background: var(--bg-secondary, #f3ede4);
+    color: var(--text-primary, #1a1612);
+}
+
+
+.sectionsItemActive {
+    background: var(--accent-coral-bg, rgba(224, 114, 86, 0.12));
+    color: var(--accent-coral-dark, #c45a3f);
+    font-weight: 600;
+}
+
+
+.sectionsTick {
+    color: var(--accent-coral-dark, #b04a2e);
+}
+
+
+/* GIAS "Open, but proposed to close" notice strip */
+.closingStrip {
+  background: #fdf6e3;
+  border-left: 4px solid #e2c96f;
+  border-radius: 0 6px 6px 0;
+  padding: 0.55rem 0.9rem;
+  margin: 0.5rem 0;
+  font-size: 0.88rem;
+  color: #6e5a00;
+  max-width: 68ch;
+}
+
+.closingStrip strong {
+  color: #8a6200;
+}
+
+@media (max-width: 640px) {
+  
+      .headerHasMap .actions .btnCompareLabel {
+          display: none;
+      }
+  
+  
+      .headerHasMap .actions .btnCompareGlyph {
+          display: inline;
+      }
+  
+  
+      .headerHasMap .actions .btnAdd,
+      .headerHasMap .actions .btnRemove {
+          display: inline-flex;
+          align-items: center;
+          justify-content: center;
+          flex: none;
+          width: 40px;
+          height: 40px;
+          padding: 0;
+          border-radius: 999px;
+          font-size: 1.375rem;
+          line-height: 1;
+      }
+}
+
+@media (max-width: 640px) {
+  
+      .sectionNav {
+          top: 56px; /* global header is shorter on mobile */
+          padding: 0.4rem 0.6rem;
+          gap: 0.375rem;
+      }
+}
+
+@media (max-width: 640px) {
+  
+      .sectionNavLink,
+      .sectionNavBack {
+          min-height: 36px;
+          padding: 0.5rem 0.75rem;
+          font-size: 0.8125rem;
+      }
+}
+
+@media (max-width: 640px) {
+  
+      .sectionNavCompare {
+          min-height: 36px;
+      }
+}
+
+@media (max-width: 640px) {
+  
+      .sectionNavAll {
+          min-height: 36px;
+      }
+}

nextjs-app/components/school/SchoolDetailShell.tsx

@@ -0,0 +1,512 @@
+/**
+ * SchoolDetailShell — the interactive chrome of a school detail page.
+ *
+ * The ONLY large client component on the route. Everything below the sticky
+ * nav is server-rendered and arrives as `children`, composed in
+ * app/school/[slug]/page.tsx. That indirection is required: a server component
+ * imported by a client component becomes a client component, so the sections
+ * cannot be imported here.
+ *
+ * What stays client-side is genuinely interactive: router.back(), the header
+ * details reveal, the hero map, the compare CTA, the nav overflow fade, the
+ * Escape-to-close jump sheet, and the scroll-spy. The scroll-spy finds
+ * sections with document.getElementById, so it works unchanged against
+ * server-rendered children.
+ */
+
+'use client';
+
+import { useEffect, useRef, useState, type ReactNode } from 'react';
+import { useRouter } from 'next/navigation';
+import { useComparison } from '@/hooks/useComparison';
+import { SchoolHeroMap, type SchoolHeroMapHandle } from '../SchoolHeroMap';
+import type {
+  School, SchoolResult, AbsenceData,
+  OfstedInspection, SchoolCensus,
+  SchoolAdmissions,
+  SchoolDeprivation, SchoolFinance, NationalAverages,
+} from '@/lib/types';
+import {
+  formatPercentage, formatProgress, formatAcademicYear, formatAgeRange, isProposedToClose, ofstedLegacyAreas,
+} from '@/lib/utils';
+import { computeSchoolFlags, type NavItem } from '@/lib/schoolSections';
+
+import { track, getNavigationSource } from '@/lib/analytics';
+import styles from './SchoolDetailShell.module.css';
+
+
+export interface SchoolDetailShellProps {
+  schoolInfo: School;
+  yearlyData: SchoolResult[];
+  absenceData: AbsenceData | null;
+  ofsted: OfstedInspection | null;
+  census: SchoolCensus | null;
+  admissions: SchoolAdmissions | null;
+  admissionsHistory: SchoolAdmissions[];
+  deprivation: SchoolDeprivation | null;
+  finance: SchoolFinance | null;
+  /** Fetched on the server so the England-comparison deltas are in the
+   *  initial HTML; null when the endpoint is unavailable. */
+  nationalAvg: NationalAverages | null;
+  /** Section list for the sticky nav, computed on the server. */
+  navItems: NavItem[];
+  /** The server-rendered sections. */
+  children: ReactNode;
+}
+
+export function SchoolDetailShell({
+  schoolInfo, yearlyData, absenceData,
+  ofsted, census, admissions, admissionsHistory, deprivation, finance,
+  nationalAvg, navItems, children,
+}: SchoolDetailShellProps) {
+  const router = useRouter();
+  const { addSchool, removeSchool, isSelected } = useComparison();
+  const isInComparison = isSelected(schoolInfo.urn);
+
+  const [activeSection, setActiveSection] = useState<string>('');
+  // Admissions view state moved to AdmissionsViewToggle, the client island
+  // inside the (server-rendered) admissions section.
+  // Only the section links scroll horizontally; Back and "All" stay pinned.
+  const sectionLinksRef = useRef<HTMLDivElement | null>(null);
+  const [sectionNavAtEnd, setSectionNavAtEnd] = useState(false);
+  // Carry the "Add to Compare" CTA into the sticky bar once the hero's button leaves.
+  const heroActionsRef = useRef<HTMLDivElement | null>(null);
+  const [heroCtaVisible, setHeroCtaVisible] = useState(true);
+  // Hero map — the "View on map" link opens its fullscreen view.
+  const heroMapRef = useRef<SchoolHeroMapHandle>(null);
+  // "All ▾" jump menu listing every section.
+  const [sectionsOpen, setSectionsOpen] = useState(false);
+  // Header details (headteacher, contact, trust, area) collapse behind a
+  // "Show all details" link on mobile/tablet, where they're below the fold.
+  const [detailsOpen, setDetailsOpen] = useState(false);
+
+  // Back returns to wherever the user came from; deep-links (no in-app history)
+  // fall back to search so the button never dead-ends or leaves the site.
+  const handleBack = () => {
+    if (typeof window !== 'undefined' && window.history.length > 1) {
+      router.back();
+    } else {
+      router.push('/search');
+    }
+  };
+
+  const scrollToTop = () => {
+    if (typeof window !== 'undefined') window.scrollTo({ top: 0, behavior: 'smooth' });
+  };
+
+  useEffect(() => {
+    const el = sectionLinksRef.current;
+    if (!el) return;
+    const update = () => {
+      const overflow = el.scrollWidth - el.clientWidth;
+      // No overflow → treat as "at end" so the fade is hidden.
+      if (overflow <= 1) {
+        setSectionNavAtEnd(true);
+        return;
+      }
+      setSectionNavAtEnd(el.scrollLeft >= overflow - 2);
+    };
+    update();
+    el.addEventListener('scroll', update, { passive: true });
+    window.addEventListener('resize', update);
+    return () => {
+      el.removeEventListener('scroll', update);
+      window.removeEventListener('resize', update);
+    };
+  }, []);
+
+  // Track whether the hero's "Add to Compare" button is still on screen.
+  useEffect(() => {
+    const el = heroActionsRef.current;
+    if (!el) return;
+    const obs = new IntersectionObserver(
+      ([entry]) => setHeroCtaVisible(entry.isIntersecting),
+      { rootMargin: '-64px 0px 0px 0px' },
+    );
+    obs.observe(el);
+    return () => obs.disconnect();
+  }, []);
+
+  // Close the "All ▾" menu on Escape.
+  useEffect(() => {
+    if (!sectionsOpen) return;
+    const onKey = (e: KeyboardEvent) => { if (e.key === 'Escape') setSectionsOpen(false); };
+    window.addEventListener('keydown', onKey);
+    return () => window.removeEventListener('keydown', onKey);
+  }, [sectionsOpen]);
+
+  // Derived data-shape logic lives in lib/schoolSections so the server route
+  // can compute the section list without importing this client component.
+  const flags = computeSchoolFlags({
+    schoolInfo, yearlyData, absenceData, census, deprivation, finance,
+  });
+  const {
+    latestResults, isAllThrough, isSecondary, isPrimary,
+    hasGenderSplit, hasInclusionData, hasSchoolLife, hasDeprivation,
+    hasFinance, hasLocation, hasKS2Results, hasKS4Results, hasAnyResults,
+    isSpecial, ks2Placeholder, suppressKs2Comparison, suppressKs4Comparison,
+  } = flags;
+  const phase = schoolInfo.phase ?? '';
+
+  const primaryAvg = nationalAvg?.primary ?? {};
+  const secondaryAvg = nationalAvg?.secondary ?? {};
+
+  const handleComparisonToggle = () => {
+    if (isInComparison) {
+      removeSchool(schoolInfo.urn);
+      track('compare_school_removed', { urn: schoolInfo.urn, from: 'detail' });
+    } else {
+      addSchool(schoolInfo);
+      track('compare_school_added', { urn: schoolInfo.urn, from: 'detail' });
+    }
+  };
+
+  // Page-view event with funnel attribution. Fires once per mount.
+  useEffect(() => {
+    track('school_viewed', {
+      urn: schoolInfo.urn,
+      phase: phase || 'unknown',
+      local_authority: schoolInfo.local_authority || 'unknown',
+      from: getNavigationSource(),
+    });
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [schoolInfo.urn]);
+
+  const deprivationDesc = (decile: number) => {
+    if (decile <= 3) return `This school is in one of England's most deprived areas (decile ${decile}/10). Many pupils may face additional challenges at home.`;
+    if (decile <= 7) return `This school is in an area with average levels of deprivation (decile ${decile}/10).`;
+    return `This school is in one of England's less deprived areas (decile ${decile}/10).`;
+  };
+
+
+  // Track active section as user scrolls
+  useEffect(() => {
+    const ids = navItems.map(n => n.id);
+    if (!ids.length) return;
+
+    const observers: IntersectionObserver[] = [];
+    const ratioMap: Record<string, number> = {};
+
+    const pickActive = () => {
+      const top = Object.entries(ratioMap).sort((a, b) => b[1] - a[1])[0];
+      setActiveSection(top?.[1] > 0 ? top[0] : '');
+    };
+
+    ids.forEach(id => {
+      const el = document.getElementById(id);
+      if (!el) return;
+      ratioMap[id] = 0;
+      const obs = new IntersectionObserver(
+        ([entry]) => {
+          ratioMap[id] = entry.intersectionRatio;
+          pickActive();
+        },
+        { threshold: [0, 0.1, 0.25, 0.5, 0.75, 1.0], rootMargin: '-56px 0px 0px 0px' },
+      );
+      obs.observe(el);
+      observers.push(obs);
+    });
+
+    return () => observers.forEach(o => o.disconnect());
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [navItems.map(n => n.id).join(',')]);
+
+  // A report card is identified by the presence of report-card area
+  // judgements, NOT by `framework` — the API sets `framework` to the raw
+  // event grouping (e.g. "Schools - S5") even for report-card schools, so
+  // the old `framework === 'ReportCard'` test never matched and report cards
+  // were rendered as legacy ratings dated to a pre-Nov-2025 inspection.
+  const isReportCard = !!(
+    ofsted?.report_card && Object.keys(ofsted.report_card).length > 0
+  );
+  // A report card is dated by its own inspection (rc_inspection_date); the
+  // legacy inspection_date belongs to an older inspection and must never
+  // date a report card (report cards exist only from Nov 2025).
+  const ofstedInspectedDate = isReportCard
+    ? ofsted?.rc_inspection_date ?? null
+    : ofsted?.inspection_date ?? null;
+
+  // ── Ofsted: detect if all OEIF sub-grades match the overall ───────────
+  const oeifAreas = ofsted ? ofstedLegacyAreas(ofsted) : [];
+  const oeifAllSameGrade =
+    !!ofsted &&
+    !isReportCard &&
+    oeifAreas.length >= 3 &&
+    oeifAreas.every((a) => a.value === ofsted.overall_effectiveness);
+
+  // Label shown in the mobile "section" menu button — the section in view.
+  const activeNavLabel = (navItems.find((n) => n.id === activeSection) ?? navItems[0])?.label ?? '';
+
+  return (
+    <div className={styles.container}>
+      {/* Standalone back link, above the header — returns to wherever the
+          user came from. Scrolls away with the page (the sticky bar keeps a
+          "back to top" control in its place). */}
+      <button type="button" onClick={handleBack} className={styles.topBack}>
+        <span aria-hidden="true">←</span> Back
+      </button>
+
+      {/* Header — the location map band blends down into the school title. */}
+      <header className={`${styles.header}${hasLocation ? ` ${styles.headerHasMap}` : ''}`}>
+        {hasLocation && (
+          <SchoolHeroMap ref={heroMapRef} lat={schoolInfo.latitude!} lng={schoolInfo.longitude!} />
+        )}
+        <div className={styles.headerContent}>
+          <div className={styles.titleSection}>
+            <h1 className={styles.schoolName}>{schoolInfo.school_name}</h1>
+            <div className={styles.meta}>
+              {schoolInfo.local_authority && (
+                <span className={styles.metaItem}>{schoolInfo.local_authority}</span>
+              )}
+              {schoolInfo.school_type && (
+                <span className={styles.metaItem}>{schoolInfo.school_type}</span>
+              )}
+              {isAllThrough && (
+                <span className={styles.metaItem}>All-through (primary &amp; secondary)</span>
+              )}
+              {schoolInfo.gender && schoolInfo.gender !== 'Mixed' && (
+                <span className={styles.metaItem}>{schoolInfo.gender}&apos;s school</span>
+              )}
+              {schoolInfo.age_range && (
+                <span className={styles.metaItem}>{formatAgeRange(schoolInfo.age_range)}</span>
+              )}
+              {schoolInfo.nursery_provision && (
+                <span className={styles.metaItem}>Nursery</span>
+              )}
+              {schoolInfo.has_sixth_form && (
+                <span className={styles.metaItem}>Sixth form</span>
+              )}
+            </div>
+            {isProposedToClose(schoolInfo) && (
+              <div className={styles.closingStrip} role="note">
+                <strong>⚠ Proposed to close</strong> — this school is proposed for closure,
+                check with the local authority before applying.
+              </div>
+            )}
+            {schoolInfo.address && (
+              <p className={styles.address}>
+                {schoolInfo.address}{schoolInfo.postcode && `, ${schoolInfo.postcode}`}
+                {hasLocation && (
+                  <>
+                    {' · '}
+                    <button
+                      type="button"
+                      className={styles.mapLink}
+                      onClick={() => { heroMapRef.current?.open(); track('section_nav_used', { section: 'location', via: 'hero_link' }); }}
+                    >
+                      View on map ↗
+                    </button>
+                  </>
+                )}
+              </p>
+            )}
+            <button
+              type="button"
+              className={styles.detailsToggle}
+              aria-expanded={detailsOpen}
+              aria-controls="school-header-details"
+              onClick={() => setDetailsOpen((o) => !o)}
+            >
+              {detailsOpen ? 'Hide details' : 'Show all details'}
+              <span aria-hidden="true">{detailsOpen ? '▴' : '▾'}</span>
+            </button>
+            <div
+              id="school-header-details"
+              className={`${styles.headerDetails}${detailsOpen ? ` ${styles.headerDetailsOpen}` : ''}`}
+            >
+              {schoolInfo.headteacher_name && (
+                <span className={styles.headerDetail}>
+                  <strong>Headteacher:</strong> {schoolInfo.headteacher_name}
+                </span>
+              )}
+              {schoolInfo.website && (
+                <span className={styles.headerDetail}>
+                  <a
+                    href={/^https?:\/\//i.test(schoolInfo.website) ? schoolInfo.website : `https://${schoolInfo.website}`}
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    data-umami-event="external_link_clicked"
+                    data-umami-event-target="school_website"
+                  >
+                    School website ↗
+                  </a>
+                </span>
+              )}
+              {(() => {
+                const total = census?.total_pupils ?? latestResults?.total_pupils ?? null;
+                if (total == null) return null;
+                return (
+                  <span className={styles.headerDetail}>
+                    <strong>Pupils:</strong> {total.toLocaleString()}
+                    {schoolInfo.capacity != null && ` (capacity: ${schoolInfo.capacity})`}
+                  </span>
+                );
+              })()}
+              {schoolInfo.trust_name && (
+                <span className={styles.headerDetail}>
+                  Part of <strong>{schoolInfo.trust_name}</strong>
+                </span>
+              )}
+              {schoolInfo.telephone && (
+                <span className={styles.headerDetail}>
+                  <strong>Phone:</strong>{' '}
+                  <a href={`tel:${schoolInfo.telephone.replace(/\s+/g, '')}`}>
+                    {schoolInfo.telephone}
+                  </a>
+                </span>
+              )}
+              {schoolInfo.religious_denomination && (
+                <span className={styles.headerDetail}>
+                  <strong>Religious character:</strong>{' '}
+                  {['Does not apply', 'None'].includes(schoolInfo.religious_denomination)
+                    ? 'None'
+                    : schoolInfo.religious_denomination}
+                </span>
+              )}
+              {schoolInfo.county && (
+                <span className={styles.headerDetail}>
+                  <strong>County:</strong> {schoolInfo.county}
+                </span>
+              )}
+              {schoolInfo.parliamentary_constituency && (
+                <span className={styles.headerDetail}>
+                  <strong>Constituency:</strong> {schoolInfo.parliamentary_constituency}
+                </span>
+              )}
+            </div>
+          </div>
+          <div className={styles.actions} ref={heroActionsRef}>
+            <button
+              onClick={handleComparisonToggle}
+              className={isInComparison ? styles.btnRemove : styles.btnAdd}
+              aria-label={isInComparison ? 'In comparison' : 'Add to compare'}
+            >
+              {/* On phones the map hero shows only the glyph (nav-bar style). */}
+              <span className={styles.btnCompareLabel}>
+                {isInComparison ? '✓ In Comparison' : '+ Add to Compare'}
+              </span>
+              <span className={styles.btnCompareGlyph} aria-hidden="true">
+                {isInComparison ? '✓' : '+'}
+              </span>
+            </button>
+          </div>
+        </div>
+      </header>
+
+      {/* Sticky Section Navigation — docks under the global header */}
+      <nav className={styles.sectionNav} aria-label="Page sections">
+        <button onClick={scrollToTop} className={styles.sectionNavBack} aria-label="Back to top">
+          <span aria-hidden="true">↑</span>
+          <span className={styles.sectionNavBackLabel}>Top</span>
+        </button>
+
+        {/* Desktop: scrolling section links */}
+        <div
+          ref={sectionLinksRef}
+          className={`${styles.sectionNavLinks}${sectionNavAtEnd ? ` ${styles.atEnd}` : ''}`}
+        >
+          {navItems.map(({ id, label }) => (
+            <a
+              key={id}
+              href={`#${id}`}
+              className={`${styles.sectionNavLink}${activeSection === id ? ` ${styles.sectionNavLinkActive}` : ''}`}
+              onClick={() => track('section_nav_used', { section: id })}
+            >
+              {label}
+            </a>
+          ))}
+        </div>
+
+        {/* Mobile: a single "section" menu button that opens the jump sheet */}
+        {navItems.length > 0 && (
+          <button
+            type="button"
+            className={styles.sectionNavMenu}
+            aria-haspopup="menu"
+            aria-expanded={sectionsOpen}
+            onClick={() => setSectionsOpen((o) => !o)}
+          >
+            <span className={styles.sectionNavMenuCur}>
+              <span className={styles.sectionNavMenuEyebrow}>Section</span>
+              <span className={styles.sectionNavMenuNow}>{activeNavLabel}</span>
+            </span>
+            <span className={styles.sectionNavMenuChev} aria-hidden="true">▾</span>
+          </button>
+        )}
+
+        {/* The hero's Compare CTA, carried in once it scrolls out of view.
+            Desktop shows a labelled pill; mobile a compact icon. */}
+        {!heroCtaVisible && (
+          <>
+            <button
+              onClick={handleComparisonToggle}
+              className={`${styles.sectionNavCompare}${isInComparison ? ` ${styles.sectionNavCompareIn}` : ''}`}
+            >
+              {isInComparison ? '✓ Comparing' : '+ Compare'}
+            </button>
+            <button
+              onClick={handleComparisonToggle}
+              className={`${styles.sectionNavCompareIcon}${isInComparison ? ` ${styles.sectionNavCompareIconIn}` : ''}`}
+              aria-label={isInComparison ? 'In comparison' : 'Add to compare'}
+              title={isInComparison ? 'In comparison' : 'Add to compare'}
+            >
+              {isInComparison ? (
+                <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2.4" strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
+                  <path d="m5 12 5 5 9-11" />
+                </svg>
+              ) : (
+                <>
+                  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" aria-hidden="true">
+                    <path d="M4 7h13l-3-3" />
+                    <path d="M20 17H7l3 3" />
+                  </svg>
+                  <span className={styles.sectionNavCompareBadge} aria-hidden="true">+</span>
+                </>
+              )}
+            </button>
+          </>
+        )}
+
+        {/* Desktop: "All ▾" trigger (same sheet as the mobile section menu) */}
+        {navItems.length > 0 && (
+          <button
+            type="button"
+            className={styles.sectionNavAll}
+            aria-haspopup="menu"
+            aria-expanded={sectionsOpen}
+            onClick={() => setSectionsOpen((o) => !o)}
+          >
+            All <span aria-hidden="true">▾</span>
+          </button>
+        )}
+
+        {/* Shared jump-to-section sheet (dropdown on desktop, bottom sheet on mobile) */}
+        {sectionsOpen && (
+          <>
+            <div className={styles.sectionsBackdrop} onClick={() => setSectionsOpen(false)} />
+            <div className={styles.sectionsPanel} role="menu" aria-label="Jump to section">
+              <div className={styles.sectionsPanelHead}>Jump to section</div>
+              {navItems.map(({ id, label }) => (
+                <a
+                  key={id}
+                  href={`#${id}`}
+                  role="menuitem"
+                  className={`${styles.sectionsItem}${activeSection === id ? ` ${styles.sectionsItemActive}` : ''}`}
+                  onClick={() => {
+                    setSectionsOpen(false);
+                    track('section_nav_used', { section: id, via: 'all_menu' });
+                  }}
+                >
+                  <span>{label}</span>
+                  {activeSection === id && <span className={styles.sectionsTick} aria-hidden="true">✓</span>}
+                </a>
+              ))}
+            </div>
+          </>
+        )}
+      </nav>
+
+      {children}
+    </div>
+  );
+}

nextjs-app/components/school/SecondaryHistorySection.tsx

@@ -3,15 +3,11 @@
  * Server component.
  */
 
-import dynamic from 'next/dynamic';
 import type { School, SchoolResult, NationalAverages } from '@/lib/types';
 import { formatPercentage, formatProgress, formatAcademicYear } from '@/lib/utils';
 import { Section, sectionStyles as styles } from './sectionShared';
+import { PerformanceChart } from './charts';
 
-const PerformanceChart = dynamic(
-  () => import('../PerformanceChart').then((m) => m.PerformanceChart),
-  { ssr: false },
-);
 
 export function SecondaryHistorySection({
   yearlyData, schoolInfo, nationalAvg, secondaryAvg, suppressComparison,

nextjs-app/components/school/SecondarySchoolSections.tsx

@@ -0,0 +1,115 @@
+/**
+ * SecondarySchoolSections — the section sequence for secondary detail pages.
+ * Server component.
+ *
+ * Wrapped in `.secondaryScope`, which activates the secondary-only style
+ * overrides in schoolSections.module.css. Those rules target class names the
+ * primary page also uses (.card, .sectionTitle, .metricCard …), so scoping is
+ * what keeps them from restyling primary pages.
+ *
+ * The render conditions here MUST match buildSecondaryNavItems in
+ * lib/schoolSections, or the sticky nav will link to sections that do not exist.
+ */
+
+import type {
+  School, SchoolResult, AbsenceData, OfstedInspection, SchoolCensus,
+  SchoolAdmissions, SchoolDeprivation, SchoolFinance, NationalAverages,
+} from '@/lib/types';
+import { ofstedLegacyAreas } from '@/lib/utils';
+import type { SecondaryFlags } from '@/lib/schoolSections';
+import { OfstedSection } from './OfstedSection';
+import { GcseSection } from './GcseSection';
+import { SecondaryAdmissionsSection } from './SecondaryAdmissionsSection';
+import { SecondaryHistorySection } from './SecondaryHistorySection';
+import { WellbeingSection } from './WellbeingSection';
+import { FinancesSection } from './FinancesSection';
+import styles from './schoolSections.module.css';
+
+export interface SecondarySchoolSectionsProps {
+  schoolInfo: School;
+  yearlyData: SchoolResult[];
+  absenceData: AbsenceData | null;
+  ofsted: OfstedInspection | null;
+  census: SchoolCensus | null;
+  admissions: SchoolAdmissions | null;
+  deprivation: SchoolDeprivation | null;
+  finance: SchoolFinance | null;
+  nationalAvg: NationalAverages | null;
+  flags: SecondaryFlags;
+}
+
+export function SecondarySchoolSections({
+  schoolInfo, yearlyData, ofsted, census,
+  admissions, deprivation, finance, nationalAvg, flags,
+}: SecondarySchoolSectionsProps) {
+  const secondaryAvg = nationalAvg?.secondary ?? {};
+
+  const isReportCard = !!(ofsted?.report_card && Object.keys(ofsted.report_card).length > 0);
+  const ofstedInspectedDate = isReportCard
+    ? ofsted?.rc_inspection_date ?? null
+    : ofsted?.inspection_date ?? null;
+  const oeifAreas = ofsted ? ofstedLegacyAreas(ofsted) : [];
+  const oeifAllSameGrade =
+    !!ofsted &&
+    !isReportCard &&
+    oeifAreas.length >= 3 &&
+    oeifAreas.every((a) => a.value === ofsted.overall_effectiveness);
+
+  return (
+    <div className={styles.secondaryScope}>
+      {ofsted && (
+        <OfstedSection
+          ofsted={ofsted}
+          urn={schoolInfo.urn}
+          isReportCard={isReportCard}
+          ofstedInspectedDate={ofstedInspectedDate}
+          oeifAllSameGrade={oeifAllSameGrade}
+          oeifAreas={oeifAreas}
+          variant="secondary"
+        />
+      )}
+
+      {flags.hasResults && flags.latestResults && (
+        <GcseSection
+          latestResults={flags.latestResults}
+          schoolInfo={schoolInfo}
+          secondaryAvg={secondaryAvg}
+          p8Suspended={flags.p8Suspended}
+          suppressComparison={flags.suppressComparison}
+        />
+      )}
+
+      {admissions && (
+        <SecondaryAdmissionsSection
+          admissions={admissions}
+          schoolInfo={schoolInfo}
+          hasSixthForm={flags.hasSixthForm}
+        />
+      )}
+
+      {yearlyData.length > 1 && (
+        <SecondaryHistorySection
+          yearlyData={yearlyData}
+          schoolInfo={schoolInfo}
+          nationalAvg={nationalAvg}
+          secondaryAvg={secondaryAvg}
+          suppressComparison={flags.suppressComparison}
+        />
+      )}
+
+      {flags.hasWellbeing && (
+        <WellbeingSection
+          latestResults={flags.latestResults}
+          census={census}
+          schoolInfo={schoolInfo}
+          deprivation={deprivation}
+          hasDeprivation={flags.hasDeprivation}
+        />
+      )}
+
+      {flags.hasFinance && finance && (
+        <FinancesSection finance={finance} showPremises />
+      )}
+    </div>
+  );
+}

nextjs-app/components/school/charts.tsx

@@ -0,0 +1,26 @@
+'use client';
+
+/**
+ * Client wrappers for the lazily-loaded charts.
+ *
+ * `next/dynamic` with `ssr: false` is only legal inside a Client Component,
+ * and the sections that render charts are Server Components. These one-line
+ * wrappers are the client boundary, so the charts stay browser-only and
+ * code-split while the section markup around them stays on the server.
+ *
+ * Chart.js is ~64 KB gzipped, so keeping it lazy matters.
+ */
+
+import dynamic from 'next/dynamic';
+
+export const PerformanceChart = dynamic(
+  () => import('../PerformanceChart').then((m) => m.PerformanceChart),
+  { ssr: false },
+);
+
+export const SatsChart = dynamic(() => import('../SatsChart'), { ssr: false });
+
+export const AdmissionsTrendChart = dynamic(
+  () => import('../AdmissionsTrendChart'),
+  { ssr: false },
+);