The Colorado Department of Human Services (CDHS) has partnered with the Colorado Evaluation and Action Lab (Colorado Lab) at University of Denver to coordinate rigorous evaluation of practices prioritized by the state for evidence-building under the Family First Prevention Services Act. As part of this effort, the Colorado Lab is accepting Letters of Interest for research teams interested in receiving funding to design and conduct a rigorous evaluation of trauma-focused cognitive behavioral therapy (TF-CBT) in Colorado.