{
  "version": "Education Data Center 3.1",
  "url": "https://eddatacenter.org/api/data/3.1?state=IL&year=2024",
  "documentation": "https://www.eddatacenter.org/data_documentation/EDC_technical_documentation_v3.1.pdf",
  "retrieved": "2026-09-24",
  "origin": "EDC documentation identifies ISBE as the source of 2023–24 tested counts, received November 5, 2025.",
  "extract": "illinois-iar-counts-2024.csv",
  "filters": "2023-24; School; All Students group and subgroup; IAR; Regular; math or ela",
  "validation": "Exact positive integer denominators for all grades 3–8 served by the school according to Report Card. Unique school/subject/grade. Weighted grade proficiency must reconcile to the published school rate within 0.11 percentage points. Failed checks and suppressed/ranged counts are excluded, never imputed.",
  "limits": "Conservative reconciliation can exclude valid records. SAT denominators are not provided by this source. Counts describe tested students, not enrollment. This extract covers 2024; the separate illinois-history-2023.json extract supplies 2023 history and its own source checksums."
}