To test the effectiveness of a family-centered, community-based, self-management intervention (Self-Management Therapy) for adolescents with schizophrenia. The primary aim is to test its effectiveness in improving the adolescents' level of functioning in role performance, thinking/cognitive processing, behavior towards others, mood, and use of substances. The second aim is to assess the impact of the intervention on family functioning. The third aim is to describe the relationships among the process variables of the intervention.