The objective of this study was to evaluate an innovative model for providing high quality professional development workshops (PDWs) in the context of a Learning Collaborative (LC) based intervention to build the capacities of school professionals to promote the social, emotional, and behavioral health of students. Eleven PDWs totaling 27.5 h were facilitated with 10 school-based teams. Matched pre- and post-surveys were completed by a total of 177 participants across the 10 teams. Results demonstrate significant increases in participants' self-reported knowledge, skills, and self-efficacy from pre- to post-participation in each workshop, as well as high ratings of overall satisfaction. LC-based PDWs, facilitated by school-based behavioral health (BH) providers, hold promise for enhancing school professionals' capacities to address the critical social, emotional, and behavioral health needs of their students. Implications for administrators, school-based BH providers, partnering community-based agencies, and policymakers in sustainably replicating this promising, data-driven model in schools are discussed.