See
Austrian economics and university
from The Ultimate Beginner meta-thread
And Where to study Austrian Economics
Obviously having a name like “Harvard” on your grad school app looks good and helps, but of course not every application, or even most of the applications are going to be from top tier schools like that. So obviously they’re going to pick students from elsewhere as well. (Diversity is a big thing these days.) Your academic record is more important, because a simply fancy name is not going to trump a poor record.
Be sure to check out Advice to Undergraduates by Peter Boettke, April 2011