Additionally, other classes that can be studied through books and does not require much explanation, like theory classes. Introduction classes where you are learning about it for the first time. Math courses, English courses especially. All Math and History. Higher level mathematics, RIM core classes.
Some classes just require access to the professor and hands on work at the school.
Any college math class. Any major classes at the 300 or 400 level. Section H 1. However, I have another friend taking accounting 300 through correspondence, which is similar. She cannot keep in touch with her teacher to find out test grades, etc.