What does PBIS stand for?  

Positive Behavior Intervention Support

Why is it so important to focus on teaching positive social behaviors?

Frequently, the question is asked, "Why should I have to teach kids to be good? They already know what they are supposed to do. Why can I not just expect good behavior?" In the infamous words of a TV personality, "How is that working out for you?"

In the past, schoolwide discipline has focused mainly on reacting to specific student misbehavior by implementing punishment-based strategies including reprimands, loss of privileges, office referrals, suspensions, and expulsions. Research has shown that the implementation of punishment, especially when it is used inconsistently and in the absence of other positive strategies, is ineffective. Introducing, modeling, and reinforcing positive social behavior is an important step of a student's educational experience. Teaching behavioral expectations and rewarding students for following them is a much more positive approach than waiting for misbehavior to occur before responding. The purpose of schoolwide PBIS is to establish a climate in which appropriate behavior is the norm.
SOURCE: © 2017 Positive Behavioral Interventions & Supports (PBIS)     https://www.pbis.org/school