Carol Ann Tomlinson is William Clay Parrish Jr. Professor Emeritus at the University of Virginia's School of Education and Human Development. The author of more than 300 publications, she works throughout the United States and internationally with educators who want to create classrooms that are more responsive to a broad range of learners.

Marcia B. Imbeau is a professor and childhood/elementary education program coordinator in the Department of Curriculum and Instruction at the University of Arkansas, working in its teacher preparation program. She has 40 years of experience as a classroom teacher in public schools, a coordinator of university-based summer/Saturday enrichment programs, an adjunct professor, and a presenter to teachers, instructional leaders, and administrators throughout the United States and internationally. For the past 25 years, Imbeau has worked as a university liaison in local public schools to assist interns and their mentor teachers, a role that allows her to help prepare a new generation of K–6 educators and K–12 teachers of advanced learners.