David is co-lead of the Teachers Thematic Group for the World Bank. He is a co-author of the World Bank’s World Development Report 2018, “Learning to Realize Education’s Promise.” He studies education, health, and social protection issues. He has designed and implemented impact evaluations in education, early child development, agriculture, health, and social protection, in Brazil, the Gambia, Kenya, Mexico, Nigeria, Sierra Leone, and Tanzania, and he has managed education projects for the World Bank in Brazil. His recent research includes “Teacher Professional Development around the World: The Gap between Evidence and Practice” and “What Really Works to Improve Learning in Developing Countries? An Analysis of Divergent Systematic Reviews.” He blogs regularly on education and other human development issues at Development Impact. He teaches economic development at the Pardee RAND Graduate School of Public Policy, and he holds a Ph.D. in economics from Harvard University.
