This book provides educators and education policy makers a picture of where the field of teaching adult English language learners is today in order to build a more effective delivery system for the future. It places adult English-as-a-Second-Language (ESL) in the broader context of the U.S. education system (K-12 and adult education), then describes trends and issues in the areas of program design and instructional practice, assessment, teacher training and professional development, integration of research and practice, and technology. The book concludes that population trends and projections for the next 10 years suggest that the number of adult English language learners in the United States will continue to grow. The effective provision of services to these adults is a primary challenge to expanding and improving the U.S. adult education system. Adequate resources, as well as creative and alternative strategies, partnerships, and collaborative efforts, are needed to address the areas of assessment, teacher training and professional development, integration of research and practice, and technology. (Adjunct ERIC Clearinghouse for ESL Literacy Education.) (Contains 58 references.) (SM)