Greetings, Seth, Joe, Florencia and Nick.
Nick, hard to advise you on a major. But there are some schools with renowned doc programs, like Stanford, Duke and Temple, as well as up and comers like the School of Visual Arts in NYC.
Florencia, D-Worder Eli Brown can probably help you out.
Joe, as someone who's made personal docs, I can say firsthand they're very difficult to pull off successfully (especially without any filmmaking experience). And you have the further problem that there's a great new doc on the subject, HOW TO DIE IN OREGON, that was at Sundance and has gotten a lot of attention. However, if you're really intent on making it, this might help.
Now back to the dungeon one and all ;-)