The motivation for this paper is the authors' recent work on several randomized control trials in which they found the primary result, which averaged across subgroups or sites, to be moderated by demographic or site characteristics. They are led to examine a distinction that the Institute of Education Sciences (IES) makes between "confirmatory"…

Researchers from the National Center for School Engagement conducted a series of studies to explore the connections between bullying in schools, school attendance and engagement, and academic achievement. This bulletin provides an overview of the studies funded by the Office of Juvenile Justice and Delinquency Prevention (OJJDP), a summary of the…

In partnership with three universities, the Cooper Institute, Dallas, completed the Texas Youth Fitness Study from 2008 to 2009. The study explored three key questions: (1) Is physical fitness associated with academic performance?; (2) Can physical education teachers collect high-quality information on student fitness?; and (3) Are school policies…