This is a well-written, detailed, and clear description of the development and use of the OPAL that walks the reader through the process using actual classroom examples well-positioned as an important, flexible resource for courses in assessment, second language acquisition, instructional methodology, and related areas as well as for professional development communities and coaching. * Robert Rueda, Professor Emeritus, University of Southern California, USA * In the current landscape of linguistically diverse classrooms, there is no excuse for not providing equitable, high-quality, engaging learning experiences to English learners. Remarkably well-written and user-friendly, this book provides invaluable information for educators to elevate their practice and guarantee that all students have full access and effective participation in instruction. * Carola Oliva-Olson, EDvance College, USA * Building on decades of critical reflection on the education of English learners, Lavadenz and Armas offer us this wonderful book designed to engage teachers in reflection and dialogue over how to better promote deep learning with their students. The instrument, OPAL, and the vignettes presented capture the essentials of good teaching. I highly recommend it as a tool both for personal and collective professional reflection. * Aída Walqui, Director, National Research and Development Center to Improve the Education of Secondary English Learners, WestEd *
