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What Works Clearinghouse Rating
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What Works Clearinghouse, 2017
The What Works Clearinghouse (WWC) evaluates research studies that look at the effectiveness of education programs, products, practices, and policies, which the WWC calls "interventions." Many studies of education interventions make claims about impacts on students' outcomes. Some studies have designs that enable readers to make causal…
Descriptors: Program Design, Program Development, Program Effectiveness, Program Evaluation