The Substance Abuse and Mental Health Services Administration (SAMHSA) is a federal government resource that provides information relevant to both juveniles and adults. There are sections for publications that are good resources and data, including outcomes and quality.
Of particular note is the section on trauma and justice, which includes reports and links, such as the National Child Traumatic Stress Network, the National Center on Substance Abuse & Child Welfare, the National Center for Trauma Informed Care, Safe Schools/Healthy Students, and Alternatives to Seclusion & Restraint.
Looking at the treatment locator, in the two counties tested, the listings included both adult and juvenile resources, and the listing seemed accurate as far as the larger, more common resources. Individual therapists and group practices of therapists were not listed in the sample.
A May 6, 2014, publication, Serious Mental Health Challenges among Older Adolescents and Young Adults, discusses mental illness and major depressive episodes specifically, and notes that older adolescents with major depressive episodes “and young adults with mental illness generally had poorer quality of life than those without mental illness.”
This is a rich website to explore. Check it out!