Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
We estimate the effects of receiving additional schooling before age five on cognitive and noncognitive outcomes, exploiting unique school entry rules in England that cause variation in the age at school entry and the effective length of the first school year, and combining survey data with administrative school records up to six years after exposure. We find significant effects on both cognitive and noncognitive outcomes at ages five and seven, particularly so for boys with a disadvantaged parental background. At age 11, effects on cognitive outcomes have disappeared, while there is still evidence for effects on noncognitive outcomes.