In the new edition of this popular resource, readers get the latest in research and practice from the field of positive behavior interventions and support, with foundational principles and practices from applied behavior analysis. The books emphasis is on a multi-tiered system of support for developing positive behaviors in children and youth, preventing challenging behaviors, and managing challenging behaviors efficiently and effectively school-wide, in classrooms, and for individual students. A wide variety of concepts and techniques are covered, ranging from the most basic through advanced, and the authors relaxed, user-friendly writing style makes the book appropriate for undergraduate and graduate students, as well as new and beginning special education and regular classroom teachers.