Thomas R. Guskey, PhD, is Professor Emeritus in the College of Education at the University of Kentucky. A graduate of the University of Chicago's renowned Measurement, Evaluation, and Statistical Analysis (MESA) program, he began his career in education as a middle school teacher, served as an administrator in the Chicago Public Schools, and was the first Director of the Center for the Improvement of Teaching and Learning, a national educational research center. He is the author/editor of twenty-five books and over three hundred articles published in prominent research journals as well as Educational Leadership, Kappan, and School Administrator. Dr. Guskey served on the Policy Research Team of the National Commission on Teaching and America's Future, as well as on the task force to develop the National Standards for Professional Development. He was named a Fellow in the American Educational Research Association and was awarded the Association's prestigious Relating Research to Practice Award. He was also awarded Learning Forward's Outstanding Contribution to the Field Award and Phi Delta Kappan's Distinguished Educator Award. His most recent books include Get Set, Go! Creating Successful Grading and Reporting Systems (2020), What We Know About Grading: What Works, What Doesn't, and What's Next (Ed.) (2019), On Your Mark: Challenging the Conventions of Grading and Reporting (2015), and Benjamin S. Bloom: Portraits of an Educator (Ed., 2nd ed.) (2012).