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Social gaps in children’s educational achievement emerge early in life and remain stable over schooling. Does social origin constantly shape achievement or is social inequality in school just an echo of inequality settled before schooling? We extend the previous research by studying the origins of social gaps in language achievement among primary-school students in Germany, the Netherlands, and the United Kingdom. Based on dynamic accounts of skill development, we expected social origin to shape school-age achievement not only directly but also indirectly via before-school achievement. Using longitudinal data (Cohort Study on Educational Careers, Millennium Cohort Study, and National Educational Panel Study) and applying an instrumental variable approach, we estimated the extent to which achievement gaps by parental education in school were generated before and during schooling. About 50–80 per cent of language gaps observed at end of primary school were explained by gaps settled before formal schooling in all three countries. Conversely, at most 20–50 per cent of school-age gaps were generated during schooling. These findings suggest that the roots of social inequality in school-age achievement must be sought primarily in processes transpiring before school life starts.

This study provides a cost-benefit analysis of expanding access to universal preschool education, focusing on a Spanish reform that lowered the age of eligibility for publicly provided universal preschool from age 4 to age 3. Benefits in terms of child development and maternal employment are estimated using evidence on the causal effects of this reform. In the baseline estimation the benefit-cost ratio is over 4, indicating sizeable net societal benefits of the preschool investment. The results show that the child development effects are the major determinant of the cost-benefit ratio; the employment gains for parents appear to play a relatively minor role. Overall, the cost-benefit analysis provides support for investing in high-quality preschool education.

This study examines the impact of preschool availability on the employment of mothers of preschool-aged children. We exploit a transitional phase of a 2009 Polish education reform that simultaneously lowered the primary school age from 7 to 6 and provided a statutory right to preschool to 5-year-olds. As a significant share of 6-year-old children moved into primary schools a year earlier, their preschool seats effectively became available for younger children. The reform thereby led to a substantial rise in the number of available preschool seats for 3-to 5-year-olds. Using regional variation in the degree of preschool expansion, we estimate the impact of the increased availability of preschool seats on maternal employment. Our results indicate a significant and sizable employment effect: a 10% points increase in the ratio of preschool seats to preschool-aged children increases maternal employment by around 4.2% points. The effect seems to be concentrated among highly educated mothers and mothers with a youngest child of age three.

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