As part of the U.S. Department of Education's Investing in Innovation (i3) grant, the Knowledge Is Power Program (KIPP) Foundation commissioned Mathematica to document leadership practices at KIPP schools.

This article draws on data and experiences observing and analyzing school lotteries from the National Evaluation of Charter School Impacts to describe challenges associated with lottery-based research. It presents evidence on the prevalence of oversubscribed charter middle schools and compares...

This report provides findings from the largest charter school study of its kind to date to use an experimental design. On average, charter middle schools that hold lotteries are neither more nor less successful than traditional public schools in improving student achievement, behavior, and...

This paper looks at findings from the first national randomized study of the impacts of charter schools on student achievement.