Extant between 2004 and 2011, Aimhigher was the UK government's flagship national initiative for widening participation to higher education for young people from disadvantaged social groups, with costs approaching 1 billion British Pounds. Its demise was predicated on a perceived lack of progress and the absence of compelling evaluative research.…

This article examines the power analyses for the first wave of group-randomized trials funded by the Institute of Education Sciences. Specifically, it assesses the precision and technical accuracy of the studies. The authors identified the appropriate experimental design and estimated the minimum detectable standardized effect size (MDES) for each…

This monograph critiques the many nonexperimental impact estimation approaches that have been based on external comparison groups. It proposes an approach to evaluating employment and training (E&T) programs that calls for using the group of individuals who apply to a program but then choose not to participate in that program as an…