You see, it isn't just as simple as adding a course just because student demands it.
First of all, a school simply cannot say "OK, we now offer a physics degree". There is a whole process of accredition involved here, and to be able to get accredited, a department must fulfill a number of criteria, including faculty competency. This requires money! There has to be a budget to support a staff that can provide adequate education for a physics major. There has to be ample resources such as library material, laboratory equipments, etc. for a physics major. It isn't a trivial process, nor cheap.
Secondly, if your school does not have a physics degree, then it is obvious that the physics classes being offered is only secondary and simply to fulfill the requirement of other degrees. I would say that people going to your school do NOT want to do physics (or they would have gone elsewhere), so I would guess that you won't get much support from fellow students to add more physics courses.
Thirdly, you can't just ask for a class in, let's say, quantum mechanics, without considering if you have something there that is willing or able to teach the class. Hiring someone again means money. And to what end would having such a class fits the purpose of the school? I mean, they're not putting out physics majors, and all they provide is whatever is required by other majors. They can't simply offer a class just because someone wants it, the same way we at PF simply can't add a sub-forum simply because someone thinks it might be a good idea. There has to be a justification that fits in with the whole picture.
Zz.