Six percent of children in the United States enter foster care by age 18. We estimate the effects of foster care on children’s outcomes by exploiting the quasi-random assignment of child welfare investigators in Michigan. We find that foster care improved children’s safety and educational...

Foster care placement is strongly associated with crime--for example, close to one fifth of the prison population in the United States is comprised of former foster children--yet there is little evidence on whether this relationship is causal. Leveraging the quasi-random assignment of child...