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Completes the last-distance-offered feature against the mockup: the year-by-year record, the same numbers drawn over real streets, and the reader's own address measured against them. Serving the history The first cut deliberately served only the latest year, because a plain series would draw a trend line straight through gaps that are absences of publication, not of a cut-off. That reasoning is answered rather than abandoned: cutoffYearRows classifies every year in the span, and the chart breaks the line rather than interpolating across it. A missing year is not one fact but three. It may be unpublished; it may be a year the school was not oversubscribed; or there may be no record at all. Collapsing them into "no data" throws away the reassuring case and hides the important caveat, so each is stated in words in the table. The claim is held to what the data supports. fact_admissions.oversubscribed compares FIRST PREFERENCES against places, which does not establish that every applicant was offered one — so the copy says "places available on first preferences" and a test asserts the stronger claim never appears. The trend summary is not a verdict It names both endpoints and their years and lets the reader conclude. It is withheld below four published points, and a swing under a tenth of the earlier figure is reported as "broadly the same" rather than dressed up as a direction. The postcode check This is the only place on the site that answers a question about a family rather than a school, so most of the care went into what it refuses to say. postcodes.io returns a centroid covering roughly fifteen addresses, which against a 500 m cut-off is a fifth of the whole distance — so a margin inside 100 m returns "too close to call" rather than a place a family does not have. Unpublished years count as unknown, never as a pass. The limits are stated before the check is used, not revealed with the answer. The postcode is geocoded in the browser and never stored. Both templates Banded and selective secondaries are exactly where this matters most, so the detail is shared. The primary page gives it a third tab; the secondary page is one flat panel by design and renders it inline. Absence is explained rather than reported. A selective school's missing figure is explained by how it admits; a consistently undersubscribed school reads as good news. Also makes the batch loader's test double honour ORDER BY. It was a no-op, so "latest row per URN" was really "first row in the fixture" and the test would have passed with the sort reversed or removed. Verified: 214 frontend tests, 54 backend, 45/53 e2e green against staging (the 8 cut-off journeys skip until the DAG runs). Rendered offline against the real compiled CSS in both themes and at 390px; every new surface clears WCAG AA, measured on composited pixels. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01WDvkyqqHABm4bmth2kjAxE
SchoolCompare Next.js Application
Modern Next.js application for comparing primary school KS2 performance across England.
Features
- Server-Side Rendering (SSR): Fast initial page loads with pre-rendered content
- Individual School Pages: Dedicated pages for each school with full SEO optimization
- Side-by-Side Comparison: Compare up to 5 schools simultaneously
- School Rankings: Top-performing schools by various metrics
- Interactive Maps: Leaflet integration for geographic visualization
- Performance Charts: Chart.js visualizations for historical data
- Responsive Design: Mobile-first approach with full responsive support
- SEO Optimized: Dynamic sitemaps, meta tags, and structured data
Tech Stack
- Framework: Next.js 16 (App Router)
- Language: TypeScript 5
- Styling: CSS Modules + CSS Variables
- State Management: React Context API + URL state
- Data Fetching: SWR (client-side) + Next.js fetch (server-side)
- Charts: Chart.js + react-chartjs-2
- Maps: Leaflet + react-leaflet
- Testing: Jest + React Testing Library
- Validation: Zod
Getting Started
Prerequisites
- Node.js 24+ (using nvm recommended)
- FastAPI backend running on port 8000
Installation
# Install dependencies
npm install
# Copy environment variables
cp .env.example .env.local
# Update .env.local with your configuration
Development
# Start development server
npm run dev
# Open http://localhost:3000
Building
# Build for production
npm run build
# Start production server
npm start
Testing
# Run tests
npm test
# Run tests in watch mode
npm run test:watch
# Run tests with coverage
npm run test:coverage
Linting
# Run ESLint
npm run lint
Project Structure
nextjs-app/
├── app/ # App Router pages
│ ├── layout.tsx # Root layout
│ ├── page.tsx # Home page
│ ├── compare/ # Compare page
│ ├── rankings/ # Rankings page
│ ├── school/[urn]/ # Individual school pages
│ ├── sitemap.ts # Dynamic sitemap
│ └── robots.ts # Robots.txt
├── components/ # React components
│ ├── SchoolCard.tsx # School card component
│ ├── FilterBar.tsx # Search/filter controls
│ ├── ComparisonView.tsx # Comparison interface
│ ├── RankingsView.tsx # Rankings table
│ └── ...
├── lib/ # Utility libraries
│ ├── api.ts # API client
│ ├── types.ts # TypeScript types
│ └── utils.ts # Helper functions
├── hooks/ # Custom React hooks
├── context/ # React Context providers
├── styles/ # Global styles
├── public/ # Static assets
└── __tests__/ # Test files
Environment Variables
| Variable | Description | Default |
|---|---|---|
NEXT_PUBLIC_API_URL |
Public API endpoint (client-side) | http://localhost:8000/api |
FASTAPI_URL |
Server-side API endpoint | http://localhost:8000/api |
NODE_ENV |
Environment mode | development |
Performance Optimizations
- Server-Side Rendering: Initial HTML rendered on server
- Static Generation: Where possible, pages are pre-generated
- Image Optimization: Next.js Image component with AVIF/WebP support
- Code Splitting: Automatic route-based code splitting
- Dynamic Imports: Heavy components loaded on demand
- API Caching: Configurable revalidation for data fetching
- Bundle Optimization: Tree shaking and minification
- Compression: Gzip compression enabled
SEO Features
- Dynamic Meta Tags: Generated per page with Next.js Metadata API
- Open Graph: Social media optimization
- JSON-LD: Structured data for search engines
- Sitemap: Auto-generated from database
- Robots.txt: Search engine crawling rules
- Canonical URLs: Duplicate content prevention
Browser Support
- Chrome (latest)
- Firefox (latest)
- Safari (latest)
- Edge (latest)
License
Proprietary - SchoolCompare
Support
For issues and questions, please contact the development team.