Nicoletti, Cheti; Rabe, Birgitta - 2013 - This version: November 20, 2013
end of secondary school. We provide empirical evidence of selfproductivity of skills and of complementarity between … secondary school inputs and skills at the end of primary school. Our inference relies on idiosyncratic variation in school … ability is 0.22 and the return to school expenditure is three times higher for students at the top of the past attainment …