The document discusses principles of classroom management from the textbook "Principles of Classroom Management" by Levin, Nolan et al. It is organized into four major parts that progress from foundations to interventions for common and chronic behavior problems. The textbook emphasizes that teachers and students share responsibility for behavior, and that teachers must change their own behavior to influence student behavior. Effective teaching involves both cognitive and affective development of students. The document also introduces the CALM strategy for managing behaviors at different levels of intrusiveness.