Clearinghouses and Collaboratives

What Works Clearinghouse

The What Works Clearinghouse identifies studies that provide credible and reliable evidence of the effectiveness of a given practice, program, or policy (referred to as "interventions"), and disseminates summary information and free reports on their website.

With over 700 publications available and more than 11,000 reviewed studies in the online searchable database, the WWC aims to inform researchers, educators, and policymakers as they work toward improving education for students.

Campbell Collaborative

Donald Campbell, a rigorous psychologist, established standards for constructing quasi-experimental designs to address social and educational issues. Thia effort is intended to set systematic review of research by various groups and avoid duplication by updating findings through integration of new, related results. Both experience and careful reasoning contribute to the interpretation of studies.

This collaborative includes more than 80 researchers from all over the world.

WestEd Standards, Assessment, & Accountability

WestEd is developing and implementing comprehensive sets of standards—from early childhood learning standards to K–12 and career technical education, along with assessment systems that are valid, fair, and aligned with rigorous standards. They have a number of resources available online.