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-seven books and over three hundred articles published in prominent research journals as well as Educational Leadership, Kappan, and The School Administrator.

Dr. Guskey served on the Policy Research Team of the National Commission on Teaching and America's Future, and 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. Perhaps most unique, in the 158-year history of his undergraduate institution, Thiel College, he is one of only three graduates to receive the Outstanding Alumnus Award and be inducted into the Thiel College Athletic Hall of Fame.

His most recent books include Implementing Mastery Learning (2023), Instructional Feedback: The Power, the Promise, the Practice (with Smith & Lipnevich, 2023); Get Set, Go! Creating Successful Grading and Reporting Systems (2020), What We Know About Grading (with Brookhart, 2019), and On Your Mark: Challenging the Conventions of Grading and Reporting (2015). He may be contacted by email at guskey@uky.edu, Twitter at @tguskey, or at www.tguskey.com.

Nancy Frey is a professor in educational leadership at San Diego State University and a teacher leader at Health Sciences High and Middle College. She is a credentialed special educator, reading specialist, and administrator in California. She is a member of the International Literacy Association's Literacy Research Panel. Her published titles include 50 Strategies for Activating Your PLC+, The Illustrated Guide to Visible Learning, Welcome to Teaching Multilingual Learners, Teaching Foundational Skills to Adolescent Readers, and RIGOR Unveiled: A Video-Enhanced Flipbook to Promote Teacher Expertise in Relationship Building, Instruction, Goals, Organization, and Relevance. 

Douglas Fisher is professor and chair of educational leadership at San Diego State University and a teacher leader at Health Sciences High and Middle College. Previously, Doug was an early intervention teacher and elementary school educator. He is a credentialed English teacher and administrator in California. In 2022, he was inducted into the Reading Hall of Fame by the Literacy Research Association. He has published numerous articles on reading and literacy, leadership, and curriculum design, as well as books such as The Teacher Clarity Playbook (2nd ed.), Your Introduction to PLC+, The Illustrated Guide to Teacher Credibility, Instructional Strategies to Move Learning Forward: 50+ Tools That Support Gradual Release of Responsibility, and Welcome to Teaching!