This article describes what is known about ways in which middle and secondary school educators have improved curricula, instruction, and assessment practices and reorganized to achieve increased collaboration and responsiveness for all students' needs. It describes seven prominently used instructional strategies and four reorganization strategies that allow secondary school communities to become successful at educating a diverse student population. A field-based example of a high school illustrates six "best practices" that emerged from interviews with inclusive educators: administrative support, ongoing professional development, collaboration, communication, instructional responsiveness, and expanded authentic assessment approaches.