Geoff Colvin draws on his experience as a classroom teacher and administrator, researcher at the University of Oregon, and national public school consultant. Recognized as a national expert on the subjects of school safety and violence prevention, Colvin has provided inservice training for teachers and administrators in more than 100 school districts and agencies nationally and internationally. He recently served as research associate at the University of Oregon and independent consultant in the areas of schoolwide discipline, school climate, school safety, and violence prevention, and has also directed a juvenile detention school and a program for seriously emotionally disturbed youth. Colvin has authored more than sixty publications, books, book chapters, journal articles, and video programs on the subject of teaching and managing students with problem behavior. Dr. Martin R. Sheehan, integrates a background in research psychology, Direct Instruction, special education, and media development. He is the owner of Double S Instructional Systems and has received federal funding for over 10 National Institutes of Health Small Business grant projects. He has served as the the Principal Investigator for