The Substance Abuse and Mental Health Services Administration and the John D. and Catherine T. MacArthur Foundation are collaborating on an effort to support early diversion for justice-involved American Indian youth with behavioral health needs. Based on their commitment to improving diversion policies and programs for these youth, four tribes were selected to participate in this effort: Cheyenne River Sioux, Lower Brule Sioux, Red Lake Band of Chippewa, and Ute Mountain Ute. The project is coordinated by the National Center for Mental Health and Juvenile Justice at Policy Research Associates, Inc. and the Technical Assistance Collaborative, Inc.