I had to type all the answers to all the questions in the teacher's manual and found quite a few grammatical, and spelling mistakes. With some of the questions the answers were not given. It was as if someone just stopped typing in the middle of a sentence. I had to look up the answers in the book. the curriculum is great as I have taken the course and that I plan to share it with others but the quality of the typed pages is not very good. Also, it is very confusing that the answers to the quizzes do not follow numerically the quizzes themselves. All the quizzes start with number one, number two, and so on. But the answers to the quizzes range from one and go in consecutive order into the 100's. That makes it very hard to determine were the answers to one quiz starts and ends. It helps to know that each answer sheet for the quizzes match the disc number. Enough said. The curriculum is great, very informative, and the book is a wonderful reference. The things that I have learned has shown me how much trouble this country is in and I plan, with the help of your curriculum to share that knowledge with as many people as I can. Keep up the good work. It is indispensable.