In case you didn’t notice, that list is specifically for grad schools. That tends to be the focus of much of this “where can I find Austrian economics in university?” discussion. You’re not really taken seriously as an undergrad…although it helps if you plan on making a career in acadamia (like those that you would be seeking info/advice from have.)
See here:
Email these guys### Threads on Austrian economics and university
But I’m not so sure he’s going to be able to get away without being frustrated. If he’s 16 and already decently read in Austrian economics, I’m not quite sure if it will be possible to even go to college without pulling at least a few hairs out. Your best bet is to do what you can to find the best school he can feasibly get into and afford, and have him find other ways of expanding on his “radical” studies.
I mean, what exactly is his goal/purpose in attending college? That’s a very important question to answer. Meanwhile, you have some time to do research. Check out: