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Education Data Center’s State Assessment Data Repository FAQ
Last updated: May 9, 2026
State Assessment Data Repository
What is the State Assessment Data Repository?
Where do the data come from?
Who created the State Assessment Data Repository?
How is the EDC different from other sites that have state assessment data?
Summative Assessments
What assessments does the State Assessment Data Repository include?
My state adopted a new assessment recently. Can I still see prior achievement data?
How do states define proficiency?
How does EDC account for changes in assessment administration?
Are proficiency data comparable across states?
Data Availability
How can I get notified about data updates?
What states are included as part of the State Assessment Data Repository?
What datasets are available to download?
What subjects does the State Assessment Data Repository include?
What school years are available as part of the State Assessment Data Repository?
What grades are available?
What student subgroups are available in the data?
How are student subgroups defined?
What variables are included in the data?
Does the dataset include student-level information?
What kinds of schools are included in the datasets?
Will more data be added to the SADR?
Using Zelma
What is Zelma?
How can I create an account? What can I do with an account?
What datasets are available to download?
How does Zelma work?
What can I do with Zelma?
How do I share my queries?
What if I am not seeing anything appear for my query?
How does Zelma handle data suppression?
Other
How do I cite the data that I use from the Education Data Center?
Where can I find the Terms of Service?
How do I contact the EDC?
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