This book provides school psychologists, counselors, social workers, school administrators, and teachers with a summary of ecologically sound primary, secondary, and tertiary prevention strategies. The contributors cover fundamentals such as how to conduct a behavioral assessment, how to measure treatment integrity and response to intervention, and how to promote generalization and maintenance of learned positive behaviors. They also discuss prevention measures such as positive behavior support and group contingencies that schools can implement system-wide. Several chapters describe more narrowly focused interventions such as daily report cards and self modeling, while the final section explains how to customize behavioral strategies for special populations such as preschoolers; children with autism, internalizing, or externalizing disorders; and those who have experienced trauma.