The Early Childhood Trauma Collaborative (ECTC) will improve trauma-focused services for young children exposed to violence, abuse, and other forms of trauma, primarily in communities with the highest rates of poverty and crime in Connecticut. The ECTC will provide evidence-based practices to young trauma-exposed children while improving the ability of the state's early childhood workforce to identify and refer children in need of these services. The ECTC will develop a network of nine evidence-based, trauma-focused treatment providers that can serve children from birth to age six who are suffering from exposure to violence, abuse, and other potentially traumatic events. The ECTC will serve at least 1,100 children and families while building a sustainable train-the-trainer approach to continue providing services after the grant. To accomplish its goals, the ECTC will 1) use the Learning Collaborative methodology to disseminate Attachment, Self-Regulation, and Competency (ARC) to eight providers; 2) use Learning Collaboratives to disseminate Child Parent Psychotherapy (CPP) to four providers; 3) support expansion of Child and Family Traumatic Stress Intervention (CFTSI) in three providers; 4) implement TARGET for caregivers of young children in three providers; and 5) train early childhood systems staff and service providers in child trauma and screening.The ECTC will be led by the Child Health and Development Institute (CHDI), an independent non-profit that has partnered with provider agencies to disseminate and sustain children's behavioral health evidence-based practices for more than 10 years. CHDI will partner with nine experienced community providers to implement the evidence-based practices in the ECTC. Other partners include the Office of Early Childhood, the Connecticut Department of Children and Families, and the Consultation Center at Yale University (evaluator).