What are the long-term effects of universal preschool programs on child outcomes? We review 26 studies using natural experiments to estimate the effects of universal preschool programs for children aged 0-6 years on child outcomes measured from third grade to adulthood. Studies comparing universal preschool with a mix of parental, family, and private modes of care show mixed effects on test scores and on measures related to health, well-being, and behavior. All estimates for outcomes related to adequate primary and secondary school progression, years of schooling, highest degree completed, employment, and earnings indicate beneficial average effects of universal preschool programs. Three of the included studies calculate benefits-to-costs ratios and find ratios clearly above one. Universal preschool tends to be more beneficial for children with low socioeconomic status and there are not consistently different effects for boys or girls. Only three studies compare two alternative types of universal preschool programs in terms of long-term outcomes.

I show that serious, yet common, parental health events in childhood have immediate and lasting effects on mental health and educational outcomes for children. Following a parental health event, the children are more likely to receive therapy and consume anti-depressant (AD) medication. More so, the children achieve lower test scores and have lower school enrollment rates. The effect immediately occurs following the event and persists at least into early adulthood. I find that the effect on test scores doesn't differ significantly across family income, but that children from low-income families are more likely to be prescribed ADs following the event, while children from high-income families are more likely to receive therapy. Exploiting differences in general practitioners' behavior in prescribing AD and referring children to therapy, I find suggestive evidence that children who are more exposed to medical treatment of mental health issues have lower educational attainments in early adulthood.

I show that serious, yet common, parental health shocks in childhood have immediate and lasting effects on mental health and human capital formation for children. Children who experience a parental health shock are more likely to have therapy and take anti-depressant medication following the shock. These children have lower test scores and school enrollment rates. The effect occurs immediately following the shock and persists at least into early adulthood. I find that the effect on test scores is no different for children in high-and lowincome families, but the families react differently to the shock; children from low-income families are more likely to be prescribed anti-depressants following the shock, while children from high-income families are more likely to have therapy. In addition, I find suggestive evidence that children who take anti-depressants following a parental health shock have lower educational attainments in early adulthood, while therapy doesn't have harmful long-term effects. * I am thankful to many who have discussed this paper with me and who have provided useful comments and feedback, particularly

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