Policies have potential to help families obtain behavioral healthcare for their children, but little is known about evidence for specific policy approaches. We reviewed evaluations of select policy levers to promote accessibility, affordability, acceptability, availability, or utilization of children’s mental and behavioral health services. Twenty articles met inclusion criteria. Location-based policy levers (school-based services and integrated care models) were associated with higher utilization and acceptability, with mixed evidence on accessibility. Studies of insurance-based levers (mental health parity and public insurance) provided some evidence for affordability outcomes. We found no eligible studies of workforce development or telehealth policy levers, or of availability outcomes.