Education Data Center
The full dataset

The most comprehensive Grade 3-8 student assessment database in America.

Spring 2025 results are in for all 50 states. Filter by state, year, grade, subject and subgroup. Preview the rows, export a clean CSV, or wire it into your analysis with the API.

≡State Assessment Data Repository

Coverage · years of data by state

Coverage: years of assessment data by state
1-910-1415-1920+ years
Open the map →
Supported byWalton Family FoundationOverdeck Family FoundationGates FoundationMichael & Susan Dell FoundationSee all →

The dataset

Clean and timely assessment data from every state.

Built from public records - state education agencies and federal NCES - and documented in a codebook you can check.

50 states + DC
plus Puerto Rico & the U.S. Virgin Islands
1998
earliest year on record - up to 27 years of history
3-8
grade levels, in ELA, math, science, social studies & more
Grade × subgroup
data disaggregation for every state

Three ways in

However you work, the data meets you there.

Start with a question, pull a clean file, or wire it straight into your analysis.

For everyone

Explore with Zelma AI

Ask in plain English and get a chart, a table, and a written answer in seconds - with a link back to the exact underlying data.

For researchers

Download the data

Filter by state, year, grade, subject and subgroup, preview the rows, then export a clean CSV with a full codebook.

Browse & download →

For developers

Query the API

A developer-friendly endpoint that drops straight into R, Stata, and Python. Copy a ready-made call from any download screen.

Read the API docs →

Built to travel

Every graph is a shareable link.

Answer a question once and it becomes a page anyone can open or send along - no login, no screenshot. Journalists and policymakers reach your data through the work people share.

See a live example →
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Why researchers trust it

Rigor you can cite.

Where it's from

Sourced & documented

Assembled from public sources - state education agencies, reconciled with federal NCES identifiers - and documented in a codebook, so you can see where the numbers come from.

Reproducible

Versioned & changelogged

Data ships in numbered releases (currently v3.1) with a public changelog, so a citation made today still resolves the same way later.

How to use it

Free, with attribution

Free for research and other non-commercial use, with attribution; commercial use requires permission. Funders have no involvement in what the data says. See the Terms of Service.

How to cite

Education Data Center. (2026). State Assessment Data Repository (Version 3.1) [Data set]. National Center for Civic Innovation. Retrieved [Month DD, YYYY], from https://www.eddatacenter.org/data

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