Global access to preschool has increased dramatically yet preschool quality is often poor. We use a randomized controlled trial to evaluate two approaches to improving the quality of Colombian preschools. We find that the first, which was rolled out nationwide and provides additional resources...

"A variety of theories of skill formation suggest that investments in schooling and other dimensions of human capital will have lower returns if children do not have adequate levels of cognitive and social skills at an early age. This paper analyzes the impact of a randomized cash transfer...