Some Children Left Behind: Variation in the Effects of an Educational Intervention

We thank participants at the Heckman 75th Birthday Conference, seminar audiences at Aarhus, CESifo, Copenhagen Business School, and RISE, as well as Natalie Bau, Jishnu Das, Paul Glewwe, Lois Miller, PaulNiehaus, Lant Pritchett and three anonymous referees for helpful comments, Brigham Frandsen for assistance in implementing the Frandsen-Lefgren bounds, and Joseph Cummins for sharing his rank similarity test code. Deborah Amuka, Victoria Brown,and Katie Pollman of Ichuli Institute were indispensable to the data collection for this study. This project would not have been possible without the efforts of Anne Alum, Patrick Engola, Craig Esbeck, Jimmy Mwoci, James Odongo, JB Opeto, and the rest of the Mango Tree Uganda staff, who developed and carried out the NULP intervention. We also thank the students, parents, and teachers from our study schools in northern Uganda. We are grateful for funding from DFID/ESRC Raising Learning Outcomes Grant ES/M004996/2, Wellspring, and the International Growth Centre. The original data collection for this project is registered with the AEA RCT Registry under registration number AEARCTR-0000021. The usual disclaimer applies. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.