organization and financing of behavioral health services for children and adolescents is rapidly shifting in the United States as a result of state and local budgetary pressures, large-scale Medicaid redesign initiatives in states, and opportunities and challenges posed by national health reform. Increasing attention to the importance of behavioral health care within the larger health care arena and among other child-serving systems, such as child welfare and juvenile justice, is also having a substantial impact. State policymakers must make decisions, often quickly, about how to invest public resources for which there are multiple, competing demands. In this context, information on the “return on investment” (ROI) from particular approaches is critical for informing policy and resource decisions. This issue brief highlights ROI information on the system of care approach for children, youth, and young adults with mental health challenges and their families.