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Scher, Lauren; Kisker, Ellen; Dynarski, Mark – Decision Information Resources, Inc, 2015
The purpose of this paper is to describe best practices in designing and implementing strong quasi-experimental designs (QED) when assessing the effectiveness of policies, programs or practices. The paper first discusses the issues researchers face when choosing to conduct a QED, as opposed to a more rigorous randomized controlled trial design.…
Descriptors: Educational Research, Quasiexperimental Design, Best Practices, Predictor Variables
Ashby, Cornelia M. – US Government Accountability Office, 2010
In connection with the Omnibus Appropriations Act, 2009, GAO (Government Accountability Office) was required to study the What Works Clearinghouse (WWC), a federal source of evidence about effective education practices. Operating through a 5-year contract awarded by the U.S. Department of Education's Institute of Education Sciences (IES), the WWC…
Descriptors: Clearinghouses, Instructional Effectiveness, Federal Legislation, Evaluation Methods