haha.. I took this quiz again, forgot the ones I got last time and ended up missing George Mason which is the school I got my bachelor's degree from. Hard to think of GMU as a "Washington University" but I guess it technically is in the "greater metropolitan area" and part of the DC/Baltimore megalopolis. I also had to cheat on the spelling of Gallaudet.
I grew up in Arlington, about 7 blocks from Marymount. I never would have gotten it from the clue. Funny thing is I thought of it 3x during the quiz from other clues, "across the Potomac", "highly religious" and "Catholic" all brought Marymount to mind. As it happens, Howard's colors are also blue and white.