The Taboo Exercise (page 137)

The Taboo Exercise is a useful first exercise for faculties to do together to get clarity, consensus, and conviction about behavioral expectations. A version of this is a built-in feature of PBIS. Through the exercise, and the discussion it necessitates, people get clearer about distinctions between the most serious and unacceptable student behaviors that warrant uniform, immediate, and consis-tent responses and consequences from the whole staff, and about behaviors that are important to address or extinguish but far less serious and therefore not worthy of community time and investment. In the latter case, individuals decide how to address them.

Referenced in The Skillful Teacher, 7th Edition, p.137