The third essay measures the effect of oversubscribed courses at a community college using a fuzzy regression discontinuity (FRD). The FRD relies on reconstructed enrollment queues, and exploits the discontinuity in enrollment at the waitlist cutoff. Using data from a large community college and the NSC, findings indicate that students substitute for unavailable courses with other courses in the same subject. We find no significant effects on later performance or transfer to other colleges.