Data-based decision-making aligns curricular instruction and behavioral supports to student and staff needs. Schools applying PBIS begin by establishing clear expectations for behavior that are taught, modeled, and reinforced across all settings and by all staff. This provides a host environment that supports the adoption and sustained use of effective academic and social/emotional instruction. PBIS has proven its effectiveness and efficiency as an Evidence-Based Practice. (Sugai & Horner, 2007).