updates for secondary schools

nextjs-app/lib/api.ts

@@ -14,6 +14,7 @@ import type {
   SchoolSearchParams,
   RankingsParams,
   APIError,
+  LAaveragesResponse,
 } from './types';
 
 // ============================================================================
@@ -241,6 +242,25 @@ export async function fetchMetrics(
   };
 }
 
+/**
+ * Fetch per-LA average Attainment 8 score for secondary schools
+ */
+export async function fetchLAaverages(
+  options: RequestInit = {}
+): Promise<LAaveragesResponse> {
+  const url = `${API_BASE_URL}/la-averages`;
+
+  const response = await fetch(url, {
+    ...options,
+    next: {
+      revalidate: 3600,
+      ...options.next,
+    },
+  });
+
+  return handleResponse<LAaveragesResponse>(response);
+}
+
 /**
  * Fetch database statistics and info
  */