Well if you're a vegetarian, and your wondering to wether or not you should stop being one, you should ask yourself why you are a vegetarian in the first place. Why did you stop eating meat two years ago? Because you don't like it, because you care about animals? Because you want to 'fight' the meat industry?
I love animals, but I also love my meat every evening. Hamburgers are the best ^_^. Anyway, if the reason you don't eat meat is for religious reasons or just out of principle, then I say just stick with it and ask the school to revise their vegie stuff.
And I would like to know why you're a vegetarian, btw? If you don't mind me asking
.