James W. Keefe, former director of research for the National Association of Secondary School Principals, is an educational consultant and writer, and president of the Learning Environments Consortium International (LEC), a non-profit forum of professors and practitioners committed to systemic school design and the personalization of learning and instruction. He was a high school assistant principal and principal in Downey, California and taught at the University of Southern California and Loyola Marymount University, both in Los Angeles. John M. Jenkins is vice president of the Learning Environments Consortium International (LEC). He was a high school principal for more than four decades and served as the director of the P.K. Yonge Development Research School on the campus of the University of Florida where he also taught graduate courses in school leadership.