The BHARP System of Care Expansion and Sustainability project will implement focused, System of Care strategies through a network of twenty-three counties in rural Pennsylvania to enhance the service delivery system for children and youth age 0-21 with serious emotional disturbance and their families enrolled, or eligible to be enrolled in the public mental health services system. The specific goals of the project are to create or enhance county stakeholder involvement in service delivery system development, implement family-systems trauma-focused interventions in Behavioral Health Rehabilitation Services (BHRS), improve treatment outcomes and level of functioning in the population of focus, and increase engagement in treatment by the population of focus and their families. Objectives focus on specific county stakeholder development, improvements in level of functioning scores as measured by required SAMHSA evaluation tools, and practice change by assessing treatment plan content and successful completion of treatment in the evidenced based practice. The project will use a tiered approach to implementation, with fourteen primary county programs, known as Tier 1, participating at the highest level, developing complete System of Care infrastructure and development of clinical and support services. The other nine BHARP counties will benefit from training on trauma systems and support for basic system of care infrastructure development, preparing them for future system of care implementation. BHRS providers in the twelve Tier 1 counties will receive training in an evidence-based practice that focuses on trauma informed structural family therapy called Parenting with Love and Limits. Specific engagement and trauma informed strategies in the evidence-based practice will be implemented in other levels of care to create a consistent experience for children and their families. County leadership teams will be created or enhanced in the counties to support family and youth engagement through the creation of family and youth networks and organizations. Four hundred children and their families will be served throughout the lifetime of the project with the goals of policy and practice development to sustain and expand the practice throughout the BHARP region. Forty will be served in year one and one hundred twenty in the remaining three years.