greenie,
I attend Ohio State, and they have a similar policy. In fact, I have to fill out a waiver to bring an bo staff to campus for my martial arts class. I always get stopped by bike cops who want to know where they can get one
This wouldn't be as big a deal if I still lived on campus, as crime on campus is essentially limited to people running off with bookbags left on tables, and the occasional DUI.
cross the street, however, and you're right smack in the middle of a nasty ghetto. recently, the number of muggings/assaults has increased quite a bit as the gang kids start to move closer to campus.
I carry a BM Ascent with me at all times-- campus or not-- as well as an ASP baton in my jacket. The only time I've ever been asked anything about what I carry was when i had my Gerber multitool sheath on my belt, and i was asked to unsheath it. Said the officer: "nice multitool." None of the other hardware has been noticed.
Best advice: when on campus, leave your cutlery in your pockets
use a tiny SAK if you have to in front of people. Campus police are so understaffed, the last thing they have time for is to shake down everyone for folders. Just blend in, and no one will care.. most people think my clipit is a pager.
Just make sure your son understands the concept of meeting force with equal force in terms of the law. My only problem in 4 years was a vagrant who wanted a shoving match, and then received a whack to the throat for his actions. fileting bad guys is sometimes frowned on depending on the political attitude of your area
Hope this helps a little...
tom