Positive Behavioral Interventions and Supports (PBIS) is an evidence-based practice that has been shown to prevent and remediate challenging student behaviors, while concurrently improving academic outcomes. While the implementation of PBIS is a schoolwide process which involves multiple intensive trainings for all instructional and support staff, the vast majority of studies to date have focused on problem behaviors occurring within the school house, in either structured (e.g., classroom) or unstructured (e.g., playground) settings. This study extended the provision of common PBIS strategies and training components to bus drivers, with the goal of reducing challenging student behaviors during times of transit to and from school. Results revealed a substantial reduction of bus discipline referrals at the middle school level, while receiving high levels of satisfaction from both the bus drivers and school administrators. Additional findings and suggestions for future implementation are provided.