AAT: Grammar and Accent by Ann Cook is a comprehensive program that simplifies complex grammar and seamlessly combines grammar, vocabulary, pronunciation, reading, writing, comprehension, and the American accent into a simple step-by-step process. The book and 2-CD set can be used by beginning, intermediate, and advanced students. It starts with the most basic grammar and pronunciation and goes through to the most advanced levels in English. The program includes placement tests, chapter tests, a mid-term, and final exam. This is an excellent resource for both ESL students and American students taking English classes.