Phillip M. Weishaar, Ph.D., was a dedicated and successful special education administrator for 28 years and a special education teacher for 6 years before becoming assistant professor in the Department of Special Education and Communication Disorders at Southern Illinois University, Edwardsville in 2008. Dr. Weishaar studied and implemented many aspects of RtI/MTSS beginning in the 1990s within his special education cooperative.
Dr. Weishaar is an accomplished presenter, author of several articles, and coauthor of a special education administration textbook. He serves on several Illinois statewide leadership teams. His areas of interest include special education administration, system wide change, outcome assessment, and a unitary system of special and general education. Dr. Weishaar earned a PhD in education from St. Louis University in 1984.