Bradley S. Witzel, PhD, is an award-winning teacher and professor who works as an associate professor and education program coordinator at Winthrop University, the flagship education college for the state of South Carolina. As a classroom teacher, and before that as a paraeducator, he worked in multiple settings teaching mainly math and science to high-achieving students with disabilities. Dr. Witzel has written five books, including the best-selling Response to Intervention in Math through Corwin, as well as several dozen book chapters, research and practitioner articles, and training manuals. He has also produced six education videos and several hundred conference and workshop presentations. He is a selected member of the Governing Board of the Southeast Regional Educational Laboratory (REL), funded by the Institute of Education Sciences (IES), and of the Smarter Balanced Assessment Consortium (SBAC) Accessibility and Accommodations work group. Dr. Witzel currently serves as the editor of Focus on Inclusive Education through the Association for Childhood Education International (ACEI) and recently served as a panelist on the IES practice guide Assisting Students Struggling with Mathematics and as an invited reviewer of the final report from the National Mathematics Advisory Panel. Most importantly, he is a father of two, husband of an educator, and son of two educators.