A significant number of youth in the United States experience traumatic events that substantially increase the risk of physical and behavioral health problems across the life span. This public health concern warrants concerted efforts to promote trauma-informed, evidence-based practices that facilitate recovery. Although youth-focused trauma-specific treatments exist, determining effective ways to disseminate and implement these services-so that they are available, accessible, and sustainable-poses an ongoing challenge. This paper describes a comprehensive model for such implementation, the community-based learning collaborative (CBLC), developed as part of Project BEST, a four-phase statewide initiative to promote trauma-focused practices. The CBLC augments the learning collaborative model by including clinical and nonclinical (i.e., broker) professionals from multiple service organizations within a targeted community. CBLCs aim to build capacity for sustained implementation of trauma-focused practices by promoting interprofessional collaboration among those involved in the coordination and provision of these services. This paper describes the iterative development of the CBLC by examining participant completion data across the three completed phases of Project BEST (N ϭ 13 CBLCs; 1,190 participants). Additionally, data from Project BEST's third phase (N ϭ 6 CBLCs; 639 participants) were used to evaluate changes in the frequency of specific practices, pre-to post-CBLC, and post-CBLC perceived utility of CBLC components. High participant completion rates, significant increases in reported trauma-focused practices, and positive ratings of the CBLC's utility provisionally support the feasibility and efficacy of the model's final iteration. Implications for implementation and CBLC improvements are discussed.