This document provides an overview of the basic components of Positive Behavior Intervention and Supports (PBIS) presented to the staff of Grayslake Central High School. It summarizes that PBIS is a proactive, multi-tiered system to establish behavioral expectations and social culture to promote academic and social success for all students. The three tiers include universal supports for all students (Tier 1), additional supports for groups of students who need more help (Tier 2), and individualized supports for students with chronic issues (Tier 3). It also outlines Grayslake Central's specific PBIS plan, which focuses on teaching the behavioral expectations of being respectful, accountable, mature, and safe through school-wide acknowledgment and reinforcement