Using data from Achieving the Dream: Community Colleges Count, this issue of "Data Notes" investigates the number of attempts it takes students to complete all developmental education courses to which they are referred. Subsequent gateway course completion and overall persistence are also examined. Three-year outcomes were analyzed and…

Widespread agreement exists that U.S. teachers need improved mathematics knowledge for teaching. Over the past decade, policymakers have funded a range of professional development efforts designed to address this need. However, there has been little success in determining whether and when teachers develop mathematical knowledge from professional…