It is difficult for policymakers to interpret and apply large numbers of studies, many of which appear to have contradictory conclusions. Blueprints Advisory Board member Larry Hedges was awarded the Yidan Prize (the world’s largest education prize) in 2018 for his statistical methods for meta-analysis that provide tools to sort through studies and understand program impacts with greater confidence. Listen to a 10-minute interview with Professor Hedges to learn about the methods he has developed for taking a more systematic approach in learning what works: