WHAT IS PBIS?
PBIS stands for Positive Behavioral Interventions and Supports.
"PBIS is a proactive approach that schools use in order to improve school safety and promote positive behavior. The focus of PBIS is prevention, not punishment."
Source: PBIS: What You Need to Know, Understood.org
https://www.understood.org/en/learning-thinking-differences/treatments-approaches/educational-strategies/pbis-how-schools-support-positive-behavior