This book describes a recent trend in the school restructuring movement--the professional-development school. These schools are committed to the acquisition and sharing of knowledge among all members of the educational community and depend on research-practitioner collaboration. In nine chapters, contributors explain the function, structure, and philosophy of the professional-development school. Contents include: (1) "Developing Professional Development Schools: Early Lessons, Challenge, and Promise" (Linda Darling-Hammond); (2) "Wells Junior High School: Evolution of a Professional Development School" (Lynne Miller and David L. Silvernail); (3) "In Pursuit of a Dual Agenda: Creating a Middle Level Professional School" (Pamela L. Grossman); (5) "Perils and Potentials: A Tale of Two Professional Development Schools" (Jon Snyder); (6) "Professional Development in Action: An Idea with Visiting Rights" (Jean Lythcott and Frank Schwartz); (7) "The Los Angeles Professional Practice School: A Study of Mutual Impact" (Johanna K. Lemlech, Hillary Hertzog-Foliart, and Arlene Hackl); (8) "Creating Professional Development Schools: Policy and Practice in South Carolina's PDS Initiatives" (Barnett Berry and Sally Catoe); and (9) "Change for Collaboration and Collaboration for Change: Transforming Teaching Through School-University Partnerships" (Sharon P. Robinson and Linda Darling-Hammond). References accompany each chapter. (LMI)