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…

Three studies identifying the characteristics of program submittals approved by the Joint Dissemintion Review Panel were examined. Between 1978-1985, 358 demonstration programs were submitted. For each of these years, between 51 percent and 83 percent of the submittals were approved. In this study, the submittals were reviewed on the basis of the…

Current practice in educational program evaluation was examined through analyses of 232 reports submitted, from 1980 to 1983, by institutions seeking approval for their programs from the U.S. Department of Education's Joint Dissemination Review Panel (JDRP). The JDRP reviews these reports to determine whether educational programs have demonstrated…

Educational programs and evaluations which were submitted to the Department of Education's Joint Dissemination Review Panel (JDRP), in order to be named validated programs, were studied to identify program characteristics associated with large versus small effect size. Effect size was calculated for 165 out of 232 submittals reviewed by JDRP from…