(MST, Multisystemic) This program is a unique, goal-oriented model that provides comprehensive treatment that serves chronic, violent delinquents ages 12 years old to 18 years old. It is a family focused, in-home and community-based treatment program that has been the focus of several major research studies, and demonstrated clinical and cost effectiveness for youth with complex emotional, social and academic needs Multisystemic (MST) is a time-limited, intensive family and community based treatment that addresses serious anti-social behavior in juvenile offenders ages 12 years old - 18 years old. Program addresses the factors associated with delinquency across the youth’s settings (e.g. family, peers, school, neighborhood) and uses the strengths of each system to foster positive change. At least one adult/parental figure must be willing to assume long-term parenting role and participate with service providers for the duration of treatment.