The Society for Research on Educational Effectiveness, with funding from the Institute of Education Sciences (IES), has been working to develop and implement a registry for education studies, the Registry of Efficacy and Effectiveness Studies (REES) (https://www. sree.org/pages/registry.php). REES aims to increase transparency, rigor, and replicability of education evaluations. In this brief article, the authors describe how they have structured REES and the implications of this structure in meeting the goals of increasing transparency.