in Germany, either teachers or parents have the discretion to decide which secondary school track a child may attend … increased time investments in students' skill development. Overall, my results suggest that selective admission policies can … lead to permanent improvements in students' educational performances. …

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 …