Their entering class size is right around 140 every year, give or take a few....like every dental school, Pacific has statistically calculated what their normal retention rate is on offers of admission made/offers accepted.......so their ratio is about 2:1, and the fact that almost 50% of those admitted decide to attend Pacific is pretty impressive, most schools have a much smaller percentage of those accepted actually deciding to enroll.
So I guess that yes, technically if all 300 decided to accept the admission offer then the school would be screwed, but that's never happened at any school....although I should mention that the current second year class at Pacific had this problem of more people accepting the offer then the school had anticipated...this resulted in a class size that was 7-8 students larger than normal....