A report that displays both the Student's Course Recommendations and Course Requests would give the school the ability to see at a glance which students are not adding in course recommendations. At this time the school would need to check individual students to determine this information.
You can see this information in the Requests and Recommendations list. You can add the Recommended by column. For recommendations that have been turned into requests, you'll see that they were recommended by someone but they now have a type of Request.