Very few schools have explicit cut-offs, and the applicant is considered as a whole, not just numerically. However there are published averages, and can be found in MSAR, USNews and on various individual school websites. You can also look on MDApplicants.com but some of that info is suspect. Some schools reduce the number of applications they look at by doing initial screens, eg. eliminating all applications with below a 3.0 from consideration. There are certainly stats below which it is a waste of money to apply to allo med school. (eg. a B- GPA and a 26ish MCAT would give you very poor odds). But you won't find many or any explicit cut off numbers, I don't think.