Tim Knoster, Ed.D., is a professor at the McDowell Institute for Teacher Excellence in Positive Behavior Support in the College of Education at Bloomsburg University of Pennsylvania. The McDowell Institute emphasizes the translation of research on multi-tiered systems of support—most specifically, positive behavior intervention and support—into practice in schools. Dr. Knoster has also served as Executive Director of the International Association for Positive Behavior Support since its inception in 2003. Dr. Knoster (or Tim, as he prefers) has been involved with preservice and in-service teacher training for more than 30 years. He has worn many hats throughout his career, including the role of an instructor of undergraduate and graduate courses, a classroom teacher in the public schools, Director of Student Support Services and Special Education, and Principal Investigator as well as Program Evaluator on federal projects focused on classroom and student-centered behavior intervention and support. Specifically relevant to this book, Dr. Knoster has extensive experience in providing professional development for classroom teachers and has been the recipient of numerous awards for his endeavors in this regard. He has extensively published and provided training for educators and staff from various child-serving systems in the application of positive behavior support in schools and community-based settings. Dr. Knoster has an uncanny ability to help teachers interpret the research literature on behavioral matters in a way that enables them to translate that same research into practical strategies and approaches in their classrooms.