|Abstract: School-Wide Positive Behavioral Interventions and Supports (SWPBIS) is being implemented in over 23,363 schools. SWPBIS is a multi-tiered framework for the implementation of evidence-based practice and uses a systems-based approach to alter school environments by targeting staff behavior in order to create positive changes in student behavior. Similar to all behavioral interventions, it is essential that SWPBIS be implemented with high treatment fidelity in order to produce desired student outcomes. This session will describe the results of a systematic literature review examining how SWPBIS fidelity measures have been developed, how reliability and validity of the fidelity measures are presented in SWPBIS research, and how data from fidelity measures relate to student outcomes. The following measures will be examined: SWPBIS Tiered Fidelity Inventory, Benchmarks of Quality, Self-Assessment Survey, Team Implementation Checklist, Benchmarks for Advanced Tiers, School-Wide Evaluation Tool, and Implementation Phases Inventory. Areas for future research regarding the validity and reliability of these measures will be discussed.