Treating the Symptom
One of the concepts we landed on was that many students sign up for courses and then never get back into them again. In the design above, you can see a section for Inactive Courses. This was an area to hold courses that students have completed, never started, or haven't touched in a long time.
After some discussion, we realized this was a reaction to the symptom rather than the problem. In later concepts that never made it to design, we discussed the possibility of letting students browse a course before signing up to take it. This would solve one of the reasons why students sign up for a course and then never return.