Randomized experiments are often considered the strongest designs to study the impact of educational interventions. Perhaps the most prevalent class of designs used in large scale education experiments is the cluster randomized design in which entire schools are assigned to treatments. In cluster randomized trials (CRTs) that assign schools to…

This paper presents an updated WWC (What Works Clearinghouse) Quick Review of the Report "The Milwaukee Parental Choice Program Longitudinal Educational Growth Study Third Year Report". The study examined whether students in Milwaukee who use a voucher to attend private school have greater mathematics and reading achievement than…