This paper studies a model where student effort and talent interact with parental and teachers' investments, as well as with school system resources. The model is rich, yet sufficiently stylized to provide novel implications. It can show, for example, that an improvement in parental outside...

This paper studies the effect of longer school days - induced by voluntary all-day programs in German primary schools - on school performance. We combine data from the National Educational Panel Study covering 5348 primary school students with municipality-level information on all-day school...