We can improve behavior by 80%, just by pointing out what one person is doing correctly (Shores, Gunter, Jack, 1993).
Shores, R., Gunter, P., & Jack, S. (1993). Classroom Management Strategies: Are They Setting Events for Coercion? Behavioral Disorders , 92-102.
Here are some examples of certificates that can be given to students when they are caught exhibiting excellent behavior: