This paper reviews and interprets the evidence from 223 rigorous impact evaluations of educational initiatives conducted in 56 low- and middle-income countries. We consider for inclusion in our review all studies in recent syntheses, which have reached seemingly conflicting conclusions about...

We present experimental evidence on the impact of a personalized technology-aided after-school instruction program on learning outcomes. Our setting is middle-school grades in urban India, where a lottery provided winning students with a voucher to cover program costs. We find that lottery...

In an effort to boost student achievement and reduce income-based gaps, the Chilean government passed the Preferential School Subsidy Law (SEP) in 2008, which altered the nation's 27-year-old universal school-voucher system dramatically. Implementation of SEP increased the value of the school...