The Substance Abuse and Mental Health Services Administration (SAMHSA) and the MacArthur Foundation are collaborating on a $1 million effort targeting the behavioral health needs of youth in contact with the juvenile justice system. Studies have found that 60-70 percent of youth in the juvenile justice system meet the criteria for a mental disorder; over 60 percent of these youth also meet the criteria for a substance use disorder. Youth with these mental, substance use, and co-occurring disorders often end up in the juvenile justice system rather than getting the proper help they need. This initiative will support state efforts to develop and implement policies and programs that divert youth away from the juvenile justice system early. The effort will also emphasize reducing overrepresentation of youth of color with mental and/or substance use disorders in the juvenile justice system, as well as the incorporation of mental, substance use, and co-occurring screening and assessment practices throughout the juvenile justice system through evidence-based practice, treatment, and trauma-informed services.