Many schools require students to work through an orientation module in order to establish their comfort level using online forums, chat, and turning in assignments. The instant feedback students can get through online quizzes--just like you get in the Module quiz, helps them know if they are mastering the material or if they need to review. The students, as you have indicated, are not a homogeneous bunch, and may require different levels of assistance. If intervention can occur early on in a course, it really helps establish the student/facilitator relationship and aids retention. Any questions? Good luck!