This series of evaluation briefs explores the relationship between (a) school climate (as measured by the Brief School Climate Survey for elementary and secondary students), (b) student-level demographics, and (c) PBIS Fidelity (as measured by the Tiered Fidelity Inventory (TFI). All briefs in this series include the same introductory information about the importance of school climate and details of the school climate survey. This brief examines the relationship between PBIS fidelity and perceptions of school climate while also taking a closer look at how this relationship may be of greater relevance to certain student groups.