Empirically supported treatments for posttraumatic stress reactions in children are not widely available. This observational study evaluates the feasibility and utility of adapting the Institute for Healthcare's Breakthrough Series Collaborative (BSC) to support the broad implementation and sustained use of Trauma-Focused Cognitive Behavioral Therapy (TF-CBT) in community practice settings. Study findings indicated that agency staff in diverse roles viewed the BSC methodology as a valuable and practicable approach for facilitating skillful delivery of TF-CBT with fidelity. Use of TF-CBT increased over the course of the collaborative and findings from a survey conducted one year later indicated that participating agencies were able to sustain and spread the practice.