Growing evidence suggests the importance of practitioners implementing promotion, prevention, and intervention practices to foster children's social-emotional competence and address challenging behavior within schools. Limited research exists, however, on how to support teachers of school-age children to implement with fidelity comprehensive frameworks that organize promotion, prevention, and intervention practices, and even fewer studies have examined implementation within early childhood classrooms. In this study, three teachers were trained and coached to implement promotion, prevention, and intervention practices related to the Teaching Pyramid Model. Findings from the present single-subject multiple probe across teachers' experimental study offer evidence of a functional relationship between training and coaching and implementation of practices associated with the model. Results are discussed with respect to challenges related to supporting teachers to implement with fidelity a complex and comprehensive array of evidence-based practices and the critical importance of coaching. (Contains 2 figures, 4 tables, and 1 note.)