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Penner, Emily K. – Society for Research on Educational Effectiveness, 2014
Children enter school with vastly different skill levels and formal schooling often magnifies these disparities over time. Widening achievement gaps between high- and low-income children have grown substantially in the last 50 years. Further, the opportunity gap facing most low-income students contributes to a host of academic and social…
Descriptors: Nonprofit Organizations, Program Effectiveness, Organizational Effectiveness, Academic Achievement
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Westine, Carl; Spybrook, Jessaca – Society for Research on Educational Effectiveness, 2013
The capacity of the field to conduct power analyses for group randomized trials (GRTs) of educational interventions has improved over the past decade (Authors, 2009). However, a power analysis depends on estimates of design parameters. Hence it is critical to build the empirical base of design parameters for GRTs across a variety of outcomes and…
Descriptors: Randomized Controlled Trials, Research Design, Correlation, Program Effectiveness