These comments reflect the cohesive community this class of 20 kids has built during the school year. That cohesion did not occur naturally. Early in the year, I watched my band of students begin to fracture. It wasn’t just bickering and playground disagreements: Girls bullied other girls through insults and exclusion, cliques formed, students with low social skills were ostracized, and most students ignored classmates who had learning and physical differences that were outside their comfort zones.

As I pondered how to teach my students to respect one another, I thought of the personal and social responsibility standards Columbine Elementary uses to teach students what mature, responsible behavior looks like. We evaluate students quarterly and show them how to evaluate their own progress using a rubric of six skills, such as “listens attentively” and “supports and interacts positively with others”—the latter being the skill that seemed to apply here.