Children in developing countries have deep deficits in math and language. Personalized coaching for teachers has been proposed as a way of raising teacher quality and child achievement. We designed a coaching program that focused on one aspect of teacher quality - teacher-child interactions -...

Most evidence on the effects of policies to promote child development refers to pilot programs implemented under tightly-controlled circumstances. We provide novel evidence on the effects of home visiting delivered at scale. The program we study, Cuna Mas in Peru, was started from scratch in...