WWC Intervention Effectiveness Ratings

The What Works Clearinghouse, or WWC, offers several types of resources to help educators make evidence-based decisions. The ratings in each Intervention Report provide What Works Clearinghouse users with valuable information about the research quality and key findings of the research on that intervention. This video explains the ratings currently used on the WWC website under Version 4.1 of the Procedures Handbook.

If you have more questions about effectiveness ratings and evidence tiers used by the WWC, please visit the Resources page on the WWC website (https://whatworks.ed.gov/) and select the “Evidence Tiers and Ratings” section to see a list of related resources.

Keywords: intervention reports, effectiveness ratings, educators, student outcomes, outcome domains

Disclaimer: This video was prepared for the U.S. Department of Education, Institute of Education Sciences, What Works Clearinghouse through a contract to American Institutes for Research (919900180019), in partnership with Quality Information Partners. The content does not necessarily reflect the views or policies of IES or the U.S. Department of Education, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government.