Final answer:
Positive Behavior Intervention Supports (PBIS) is a schoolwide model that coordinates interventions across a schoolwide system and is focused on data and evidence-based practices.
Step-by-step explanation:
Positive Behavior Intervention Supports (PBIS) is a Schoolwide model because it coordinates interventions across a schoolwide system and is oriented on problem-solving based on data and evidence-based practices. PBIS aims to create a positive and supportive school climate by establishing clear expectations for behavior, providing proactive interventions to prevent problem behaviors, and recognizing and reinforcing positive behaviors.