The Center for the Adaptation and Implementation of Trust-based Relational Intervention® (TBRI®) will provide national expertise in training and implementation of an integrated trauma treatment and service model and support the continuum of care for children, youth, and families served by child welfare and juvenile justice with specialized adaptations of the TBRI model. The Karyn Purvis Institute of Child Development (KPICD) at Texas Christian University, in partnership with the Children’s Trauma Assessment Center (CTAC) at Western Michigan University, is uniquely positioned to address trauma among children and youth through workforce development, implementation support, and stakeholder engagement. The project will utilize TBRI, a holistic, evidence-based model of care grounded in attachment and neurodevelopmental trauma that effectively reduces trauma symptoms and improves behavioral outcomes in children (Purvis et al., 2015). The population to be served consists of the workforce in the following service settings: foster care/adoption preservation, caregiver training/support, congregate care, juvenile justice facilities/services, probation, and family courts. These distinct yet overlapping sectors will be the recipients of direct services such as specialized product development, training, consultation, and implementation support designed to equip the workforce to recognize and respond to trauma in children and youth. The KPICD and CTAC will develop and train professionals in an integrated trauma treatment and service model with the objective of producing a standardized protocol by end of Year 1 to deliver to practitioners in the field in Years 2 through 5. To facilitate program sustainability and fidelity, reflective consultation will be provided with the following objectives: (1) develop a consultation resource handbook and (2) hire and train consultants from target service sectors. To expand trauma-informed training to historically underserved communities, we will (1) partner with the Dine’ (Navajo Nation) Trauma Project to co-create an Indigenous Holistic Healing Model and support trauma training and implementation to indigenous communities and (2) launch an inclusiveness initiative to incorporate and engage a diverse range of voices and lived experiences in resource development and service delivery with a focus on improving equity, inclusiveness, and accessibility. To promote strategic collaboration and to equip the workforce, we will (1) provide NCTSN collaborative members with TBRI training and consultation, and (2) partner with stakeholders from child- and youth-serving organizations to develop specialized adaptations of TBRI training materials and resources to meet the needs of distinct service settings and audiences. Utilizing the combined anticipated training and outreach opportunities of the KPICD and CTAC, we expect project impact on a national scale. This includes 3,000 practitioners from across the U.S. trained in TBRI Practitioner Training (750 annually in Years 2-5), 800 individuals trained in indigenous communities through the Dine’ Trauma Project (200 annually in Years 2-5), and 30 professionals trained through collaboration with NCTSN members.