Roger Pierangelo, Ph.D., has over thirty years of experience as a classroom teacher, school psychologist, full time Associate Professor of graduate special education, clinical psychologist, forensic psychologist, and director of a private clinic. He is the author of fourteen books on special education including The Special Educator's Book of Lists, Second Edition, and Special Educator's Complete Guide to 109 Diagnostic Tests (coauthored with George Giuliani), both from Jossey-Bass.