Thomas R. Guskey, Ph.D., is Professor Emeritus in the College of Education, University of Kentucky. A graduate of the University of Chicago, he began his career in education as a middle school teacher, served as a school administrator in Chicago Public Schools, and was the first Director of the Center for the Improvement of Teaching and Learning, a national educational research center. Dr. Guskey is a consultant to the Office of Overseas Schools in U.S. State Department, and to the Compassionate Coaches Program of the Army of Survivors, a national organization advocating for and supporting child athlete survivors of sexual violence. He is a Fellow in the American Educational Research Association and was awarded the Association’s prestigious Relating Research to Practice Award. He is author/editor of 25 award-winning books and more than 300 book chapters and articles. His most recent books include Implementing Mastery Learning (2023), Get Set, Go! Creating Successful Grading and Reporting Systems (2020), What We Know About Grading (with Brookhart, 2019), On Your Mark: Challenging the Conventions of Grading and Reporting (2015), Reaching the Highest Standard in Professional Learning: Data (with Roy & Von Frank, 2014), and Benjamin S. Bloom: Portraits of an Educator (2012). He may be contacted by email at guskey@uky.edu, Twitter at @tguskey, or at www.tguskey.com.