School-based teams are central to referrals, problem solving and decision-making in school mental health (SMH). Although the use of teams in SMH appears commonplace, research on these teams, however, is much more limited in scope. Using best practice teaming principles as a conceptual framework, this exploratory study examined the purpose, structure and function of 41 school-based service-delivery teams from 19 schools. Descriptive analyses revealed wide variations in teaming practices. Challenges related to youth and family members being involved in teams, as well as varied team leadership, were noted. In addition, teams discussed numerous topics as part of meetings. The discussion of data, however, was a topic that a limited number of teams discussed. Implications for SMH practice and research are offered.