Dana (education, U. of Florida, Gainesville) et al. help districts define, develop, and implement a systematic inquiry-based approach to professional development targeted at the learning of all members of the system--both teachers and students--to improve teacher quality and student achievement. They describe a model that involves educators and students defining questions they are passionate about exploring, collecting and analyzing data to inform their questions, and sharing what they have learned with others. They also discuss the roles of the administrator, teacher, student, and coach, and the development of strong coaches. For each role, they explain how the inquiry process can occur, its benefits and challenges, and a specific plan. Example stories from districts in Florida are included. Annotation ©2011 Book News, Inc., Portland, OR (booknews.com)