To make REES even more secure, you will need to sign in using your ICPSR Researcher Passport. If you don't yet have a passport, the process is quick, easy and free. As a bonus, you can access ICPSR's other data and features.

REGISTRY OF EFFICACY
AND EFFECTIVENESS STUDIES

The Registry of Efficacy and Effectiveness Studies (REES) is a database of causal inference studies in education and related fields.

REES is designed to increase transparency of and access to information about both ongoing and completed efficacy and effectiveness studies.

REES accommodates a range of study designs, including randomized trials, quasi-experimental designs, regression discontinuity designs, and single case designs. The database is searchable and exportable.

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