How should I compare University of Rochester and Boston University acceptance rates when choosing where to apply?

Treat Boston University as the tougher admit overall, but do not use the acceptance-rate gap by itself to decide where to apply. BU gets a very large applicant pool and is widely seen as more selective in raw admission odds, while Rochester’s smaller scale, strong merit-aid culture, and emphasis on fit can make its process look different on paper. In practice, both belong on a reach-leaning or at least highly selective part of a balanced list for most students.

Acceptance rate can tell you one useful thing: how hard it is, on average, to get an offer from that school in a given year. It can help you sort colleges into broad buckets like more selective and less selective. But it cannot tell you your personal chances very well, because it does not show how your grades, course rigor, testing, intended major, and activities line up with that institution’s applicant pool.

At BU, the rate is influenced by sheer volume and by the fact that many students apply because of name recognition, city location, and breadth of programs. That means the admit rate reflects a crowded national pool, not just academic fit. Rochester’s numbers are shaped more by a smaller undergraduate population, a distinctive academic culture, and often more targeted interest from students who actively want its flexible curriculum and research-oriented environment.

Another reason not to overread the rate is that these schools evaluate somewhat differently in context. Rochester is known for an open curriculum with relatively few distribution requirements, so students who can clearly explain why that freedom fits them may connect especially well there.

For building your list, use acceptance rate as a starting signal, not a verdict. Compare academic profile, major-specific strength, cost, campus setting, and whether your application matches what each school seems to value.