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New research, published in April analyzes the effectiveness of the foster care system in Michigan. In what is perhaps a surprising result, children who enter the foster care system are better off than their peers who remain with their parents.
A recent study showed that 6% of all American children spend some amount of time in the foster care system. That number is much higher for children of color: 10% of Black children enter the foster care system at some point in their childhood, and 15% of Native American children enter the system at some point.
Economists have been studying foster care outcomes since 2007. Previous research studied foster care outcomes from Illinois and found that foster care hurt children more than leaving children in the home. That study looked at children on the margin – those who were on the boundary between being removed from the home and staying with parents – to show that those who were removed from the home were convicted of crimes at higher rates, and had lower long-term incomes.
This study uses the same research design in Michigan, and suggests the opposite result: these authors found that foster care reduced the likelihood that children were alleged to be victims of abuse by 52%, increased daily school attendance by 6%, and a small decrease in findings of juvenile delinquency.
So why is Michigan so different from Illinois? These authors suggest that Illinois’ foster care system was especially harmful, so rather than foster care in general harming children, Illinois’ implementation of foster care was to blame. As evidence, they show that Illinois children spent the longest amount of time in the system in the country, while Michigan is closer to average.
Another possible explanation is that foster care has simply improved over time. The authors cite to a child trends study which shows that children are now spending less time in the system, and are being placed with family members more often.
What does this mean for those interested in child policy? It’s not quite clear. Hopefully, research like this will prompt other states to look at their own foster care programs to see if they are more like Illinois or Michigan. We know that removing a child from the home is a drastic measure that should only be taken when absolutely necessary. Nothing here suggests that more children should enter foster care, only that in this particular jurisdiction, it is effective for the child on the bubble between removal and remaining in the home.
My takeaway is this: good foster care that helps children is possible. It might look like shorter stays in the system and more placements with family members. It definitely looks like states should be analyzing their foster care systems with the most advanced tools possible, like the ones these economists employed.
 Max Gross & E. Jason Baron, Temporary Stays and Persistent Gains: The Causal Effects of Foster Care, American Economic Journal: Applied Economics 14(2): 170–199 (2022).
 Emanuel Wildeman, Cumulative Risks of Foster Care Placement by Age 18 for U.S. Children, 2000–2011, PLoS ONE 9(3): e92785 (2014).
 Joseph J. Doyle, Jr., Child Protection and Child Outcomes: Measuring the Effects of Foster Care, American Economic Review 97 (5): 1583-1610 (2007) (“the results suggest that children on the margin of placement tend to have better outcomes when they remain at home, especially older children.”).
 Child Trends, Child Trends Databank, https://www.childtrends.org/indicators/foster-care.