For a fully online course with no direct interaction with others (e.g. students, classes etc.) it's a very well-designed course. The grammar and teaching methods modules are especially good and I learned a lot about how to structure classes. As a general point, I think the quizzes could be slightly more difficult - a lot of the answers are obvious given the options available but perhaps the only way to ensure this is to use free-entry boxes rather than multiple-choice questions which makes the course more difficult to run. Ultimately there is no substitute for actual classroom experience but this is a really good foundation course.