This study analyzes the effect of age-based retention on school achievement at different stages of education. I estimate an instrumental variable model, using the predicted probability of retention given month of birth as an instrument, while simultaneously accounting for the effect of month of birth on maturity at the time of testing. The…

Late entry into primary school is a widespread phenomenon in developing countries. Students who enter school late are more likely to repeat grades, drop out and perform more poorly. Yet the phenomenon has received little scholarly attention, and there is a dearth of cross-national data. In this paper, we draw on data from the Multiple Indicator…