As you travel and explore, remember that art and history museums and other sites of interest usually have discounts for students. If a particular museum doesn't have enough of a discount, visit them when they're free - nationwide, museums are free every first Sunday of the month. Cinemas and theaters will offer student prices or a loyalty card at a substantial discount. And don't forget about those *must* try foods in France! Many restaurants (especially informal ones) will have student prices or a special menu for students. And remember, even if a special student price isn't advertised, it never hurts to ask, as chances are good they will offer some sort of discount (and you get to practice your French)!
Also, don't forget to check out our 72 killer resources for studying abroad in France!