Lessons learned while building a trauma-informed public behavioral health system in the City of Philadelphia.

Exposure to traumatic experiences among youth is a serious public health concern. A trauma-informed public behavioral health system that emphasizes core principles such as understanding trauma, promoting safety, supporting consumer autonomy, sharing power, and ensuring cultural competence, is needed to support traumatized youth and the providers who work with them. This article describes a case study of the creation and evaluation of a trauma-informed publicly funded behavioral health system for children and adolescents in the City of Philadelphia (the Philadelphia Alliance for Child Trauma Services; PACTS) using the Exploration, Preparation, Implementation, and Sustainment (EPIS) as a guiding framework.