B
Varies
The dating scene is tough- the unbalanced guy/girl ratio seems even higher than it is (which would be about 40/60). Women make the first moves and I know plenty of awesome gorgeous single ladies here. Luckily, Portland is full of young people! Get out there and meet them!
There truly isn't a typical student- many people cross the boundaries of stereotypes. There are, however, lots of hipsters, hippies, athletes, radical feminists, bookworm types, and plenty of nice people. People dress comfortably but not extremely casually- not many PJ bottoms, but definitely jeans etc.
Socially the school is fairly cliquey, but you will find great people if you put yourself out there.