effects on school grades, but these negative effects are largely confined to children born extremely preterm (<28 weeks of … gestation, i.e. born at least 10 weeks earlier). Children born moderately preterm (i.e. born up to 5 weeks early) suffer no ill … school environment is very important for the outcomes of preterm born children, such that those born extremely preterm that …

local students in Shanghai, where local students all go to public schools, but migrant students are endogenously selected … all student groups. We conduct policy experiments to examine the effect of transferring migrant students from private …