My research is focused on education and social policy in developing countries, especially in Latin America.  I am especially interested in rigorously identifying the causal impact of policies on the schooling, health, and economic outcomes of children and their families. Among many topics, I have explored the impact of conditional cash transfers and rural school reform in Honduras, of youth orquestras in Venezuela, and of private school vouchers and free school meals in Chile.  This work has received financial support from the the Inter-American Development Bank, the RAND Corporation, the Spencer Foundation, and the William and Flora Hewlett Foundation.  It has been published in several books and many journals, including the American Economic Review, Educational Evaluation and Policy Analysis, the Journal of Human Resources, and the Journal of Public Economics.