Does a high regional concentration of immigrants of the same ethnicity affect immigrant children's acquisition of host-country language skills and educational attainment? We exploit the exogenous placement of guest workers from five ethnicities across German regions during the 1960s and 1970s in...

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...

Decentralization of decision making is among the most intriguing recent school reforms, in part because countries went in opposite directions over the past decade and because prior evidence is inconclusive. We suggest that autonomy may be conducive to student achievement in well-developed...