This article explores central elements that facilitate successful mathematics professional development in urban secondary schools through a case study of one long-term effort. The following research question guided this study: How can schools structure professional development that supports teacher learning and addresses the complex realities of…

No Child Left Behind (NCLB) gives states wide discretion to define what students must learn, how that knowledge should be tested, what test scores constitute proficiency, set standards for high school graduation rates, teacher qualifications, school safety and many other aspects of school performance. As a result, states are largely free to define…