<p>It depends on how many they admitted. If they expect yield to increase again, they might have moved more to the wait list to reduce the pool of admitted students. Using the same numbers, if 25% of the admitted students enrolled (instead of 22%), enrollment would be 4200, which is more than they have room for, I think. They increased the waitlist by 2500… if you subtract that number from 16,879 (the number offered admission), you have 14,379 admitted… 25% of that is about 3,600. By moving those 2500 students to the waitlist, they can control the yield a little better, which would make sense during a time of uncertain growth. This is all speculation on my part, but I wouldn’t be surprised if this was at least partly a factor. </p>