Peer-Assisted Learning Strategies is a peer-tutoring program for grades K–6 that aims to improve student proficiency in math and other disciplines. The program supplements regular math instruction by having students work in pairs or small groups, coaching one another, practicing math concepts, and providing encouragement and feedback to their peers. After reviewing 13 studies that examined the effects of Peer-Assisted Learning Strategies on the math performance of elementary school students, the WWC found that one study meets WWC evidence standards without reservations. This randomized controlled trial included 328 first-grade students in five elementary schools in the southeastern United States. Based on the evidence reported in this study, the WWC found that the program has no discernible effects on mathematics achievement for elementary school students. Read the full report now at http://ies.ed.gov/ncee/wwc/interventionreport.aspx?sid=619.