There is certainly an aspect of overbooking present in university admittance/enrollment: Universities regularly "admit" more students than they can actually al

There is certainly an aspect of overbooking present in university admittance/enrollment: Universities regularly "admit" more students than they can actually allow to "enroll". If a university can physically support a freshman class of, say, 1000 students, they will "admit" a number higher than that, say 1300, knowing that only a percentage of the students that they admit will actually end up enrolling (because very simply some of them choose to enroll at a another university that they were also accepted into). Here at the university I work at they refer to this "admittance/enrollment" ratio as "yield" or "yield rate". The yield is tracked from year to year and the number of acceptance letters sent out is based on this historical data. Sometimes, though, the University is surprised (like this past year here) and gets a much higher yield rate and ends up with more students than dorm rooms...