TESOL International Association has defined a core set of principles for the exemplary teaching and learning of English as a new language. This exciting new book applies these principles to adults learning English in adult education and workforce development settings. The 6 Principles and their recommended practices are targets of teaching excellence that provide teachers with the knowledge to improve instruction and assessment. Instructional techniques are illustrated with a multitude of classroom examples and vignettes. The 6 Principles will help educators develop English language instruction that directly serves learners’ needs and goals; respect, affirm, and promote learners’ home languages and cultural knowledge and experiences as resources; implement engaging and relevant lessons that build 21st-century workplace skills; support learners in their acculturation to a new country; and teach learners strategies that can sustain their language learning outside the classroom. The book highlights important aspects of second language learning to help teachers create beneficial conditions for productive English language development. Further, it presents a valuable overview of challenges that adult learners face and offers potential solutions to obstacles that affect their acquisition of English. Sample tools (e.g., charts, techniques, activities) are ready to use in the adult English language classroom.