Search our database of 1,200+ summaries of randomized evaluations conducted by our affiliates in 99 countries. To browse key policy recommendations from a subset of these evaluations, visit the Policy Publications tab above.

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Principal Training to Improve Student Achievement in Puerto Rico

Researchers are evaluating the impact of changes in school management practices on student outcomes over time by introducing a large-scale principal training program for school directors in Puerto Rico and testing different strategies to sustain improved management practices after the program.

Incentivizing Physical Activity to Improve Mental Health During Covid-19 Disruptions in the United States

Osea Giuntella
Kelly Hyde
Silvia Saccardo
Sally Sadoff
Researchers conducted a randomized intervention to measure the impact of financial incentives for reaching daily step goals on physical activity and depression risk during the Covid-19 pandemic, to better understand the association between physical activity and mental health. While program...

Auditing Schools' Responsiveness to Students with Disabilities in Districts of Choice

Isaac McFarlin
Researchers sent emails to schools posing as parents of students with randomly-varied characteristics to assess if schools responded differently to different types of students. The researchers found that on average both charter and traditional public schools were less likely to respond to students...

Sending Text Messages to Parents to Improve Student Achievement in Middle and High Schools in the United States

Eric W. Chan
A randomized evaluation of the text alert program showed that the intervention reduced course failures, increased class attendance and improved in-class exam scores. The effects are larger for students with below-average GPAs and students in high school, and positive effects persist into the second...

Evaluating the Impact of a Tech-Based Early Childhood Vocabulary Program in the United States

Ariel Kalil
Susan Mayer
Rohen Shah
Researchers evaluated the impact of a vocabulary improvement “edutainment” program for young children, Big Word Club, on children’s receptive vocabulary. Researchers found that the Big Word Club increased students’ knowledge and retention of words included in the program without detracting from...

The Impact of In-School Application Support on College Application and Enrollment Rates in Canada

Reuben Ford
Researchers studied the impact of an in-school program to provide application assistance at schools where fewer than half of high school seniors typically enter college the following year. Application fee waivers combined with an online tool that provided customized college information boosted...

Intensive Case Management to Overcome Barriers to Self-Sufficiency in the United States

Researchers worked with the City of Rochester and local social service providers to evaluate the Bridges to Success program, in which participants were paired with mentors who helped them move towards economic self-sufficiency.

The Effect of School Choice on Academic Achievement in the United States

Julie Berry Cullen
Researchers used Chicago’s school choice program, which uses a random lottery to allocate slots in elementary schools, to evaluate how the opportunity to attend a higher-quality school impacts academic achievement. They found that lottery winners are more likely to attend higher-performing schools...