Schools and districts by ZIP

CCD (Common Core of Data)

NCES annual census of every public elementary + secondary school in the US — enrollment, demographics, finance, locale.

SABS (School Attendance Boundary Survey)

NCES geographic dataset mapping the catchment boundary of every public elementary, middle, and high school in the US.

Title I (Elementary and Secondary Education Act)

Federal program providing supplemental funding to schools with high concentrations of low-income students.

NAEP (National Assessment of Educational Progress)

Federally-administered student assessment — the 'Nation's Report Card' — math + reading scores by grade + state.

Title III (English language acquisition)

ESEA federal funding stream for English-language-learner programs in K-12 schools.

FBI UCR and NIBRS — what crime statistics actually show (and don't)

The FBI's Uniform Crime Reporting (UCR) program and its successor NIBRS aggregate crime data from local agencies. Plain-English guide to what gets reported, what doesn't, and how to read the numbers.

School district boundaries — how to confirm yours and why it matters

How school district boundaries work, where to find them, and why the same street can split between two districts.

Reading FBI UCR national crime trends — what 2020–2025 actually shows

Plain-English guide to recent US crime data: the 2020 spike, the 2021–2024 normalization, and how the UCR-to-NIBRS transition complicates year-over-year reads.

NCES Common Core of Data — what district boundaries actually mean for buyers

How NCES district boundaries, school ratings, and student-teacher ratios feed real-estate decisions — and what the data does NOT tell you.

NCES SABS — the only authoritative US school attendance map

NCES SABS is the federal school-attendance-boundary survey. Here's what it covers, what it misses, and how zipradar uses it for ZIP-to-school mapping.

Data staleness — when to re-check zipradar before making a decision

Federal data refreshes on different cadences. Here's when zipradar's snapshot is fresh enough for your decision and when you need to verify with the primary source.