With increasing numbers of ELLs posing unique challenges and opportunities for schools, the authors address educators' concerns in a concise and accessible way. The book provides a basic but comprehensive introduction that serves as a state-of-the-art guide to the field, using a straightforward Q&A format designed to focus sharply on the major issues, such as the research on effectiveness of various programs, and assessment and accountability for ELLs. For use with Grades K–12.