Edited by Arthur L. Costa and Bena Kallick
We wish to acknowledge the encouragement and support of the publications staff at ASCD, including Scott Willis, Nancy Modrak, and Darcie Russell; also the excellent work of Kathleen Florio.
We also wish to express our appreciation to all the dedicated professionals who have contributed their knowledge, creativity, and talents to this book. Their main beneficiaries, of course, are their students.