In the Old Adobe Union School District in Petaluma, California, the school staff's goal is to assure that all teachers make the fundamental shift from teacher-centric to learner-centric thinking. For them, this is what distinguishes great teachers from good teachers. They believe this level of expertise takes years to develop and that schools play…

Promises to staff usually evolve around issues of working conditions and individual autonomy, but a staff's collective commitments to students can serve as a powerful catalyst for improved professional practice. In this article, the authors present two schools--Penasquitos Elementary School in San Diego, California, and Levey Middle School in…