I understand the dillemma Maxtro is talking about. The girls in his environment have either no or a low interest level in him to start with, and the question is could you really get laid with someone who has no interest or a low interest in you to start with? It make sence for him to wait to see if they make any moves on him -- he's just trying to find an easy high-interest level chick there.
The problem is, if nobody has a high-interest level in you, then there is no solution.
The other dynamic to this is what type of vibes is being giving out, if you give out a happy and friendly vibe then maybe that would sort of resonate.
I'd focus on looking at something that would make you happy as a person apart from getting laid and finding a passion or group that would get you going as a way of getting this sort of vibe or something....other people also talked about having fun, that's another way of giving off that type of vibe.
By the sound of the post you sound like you are approval seeking and that it's bothering you how the girls in that environment are treating you - obviously you are not the alpha male in the classroom, if there is a way that you can express your alpha maleness (i.e. volunteer to do something in the class, etc...), maybe that could also help?