This. In fact they don't even need to charge for the course - my school enrolls the student in a 1-credit course in the subsequent semester.

Not providing CPT for internships is probably the worst bureaucracy nightmare for international students. OPT has a high application fee, long turnaround, and takes up time from post-graduation employment. CPT is literally the opposite - I remember stepping into my school's international student office with an offer letter, and 5 minutes later I have my work authorization in hand.