The review of individual studies underlies all What Works Clearinghouse (WWC) products, from reports on a single study to a systematic review of all studies on an intervention. The WWC provides the capability for users to extract data resulting from WWC reviews for every study that meets standards.

The WWC provides this extraction tool as part of our open data approach to increase transparency. The continually updated dataset provides:

• Greater transparency for WWC reviews, allowing users to replicate WWC findings and reports
• Comprehensive information to encourage research questions beyond those asked by the WWC
• Detailed study findings to allow for meta-analysis
• Contextual information for the examination of what works for whom and under what conditions
• A pre-merged file containing data from all findings, studies, and intervention reports, with new publicly available data, including
  • WWC ratings of individual findings
  • The Level 1 unit of analysis
  • An indicator of “multisite”
  • Topic areas
  • Posting date
  • ESSA evidence tiers

Use the filters below for the pre-merged file to download targeted data from intervention reports, studies, and findings. Users can filter by WWC study rating, topics, protocols, interventions, ESSA ratings, standards versions, and outcome domains. Users may also choose to download data from intervention reports, studies and findings in separate files; however, the filters are for use with the merged file.

The merged file contains data from intervention reports, studies that Meet WWC Group Design, Single Case Design, and Regression Discontinuity Design Standards With and Without Reservations, as well as individual findings from these studies.

This file does not include studies or finding from studies that Do No Meet WWC Standards. Users wishing to download all studies in the WWC database, including those that Do Not Meet WWC Standards, should download the separate file. The merged file, as well as the separate file downloads, do not include findings that do not meet WWC standards.

If you are interested in a separate data extract that includes archived reviews, please visit the Archived Data From Individual Studies page. Note that archived reviews may contain information that has been updated in new reports.