How do school communities create environments that fully prepare both English learners and dual-language learners for colleges and careers? This valuable book profiles six high-performing high schools that had a singular focus on improving the educational outcomes of English learners. The authors use these case studies to identify a comprehensive set of design elements and shared values that were key factors in yielding extraordinary results. These include a school-wide language development framework that integrates content, analytical practices, and language learning; a broad and dynamic view of assessment practices; intensive social-emotional support for students and their families; and mission-driven staff and leadership that maximize learning opportunities across classrooms. The practices employed in these schools are not only essential for English learners' success but, as the performance data shows, they also benefit "all" students. This book: provides practical, actionable ideas that schools across the country can adapt to help their own EL students; shows how schools incorporated a language development framework as part of their daily improvement work of teaching and learning; identifies the key school design features and values that enable diverse students, families, and staff to succeed; and examines how everyone in the school community works together to accelerate learning opportunities for adolescent English learners. [Foreword by Michael Fullan.]