As discussed above, college policies are different from laws. So it’s possible to get in trouble for smoking weed on campus, even if you’re not breaking any state or local laws.
If medical or recreational marijuana is legal in your state, and you live off campus, it’s probably safe to use marijuana in your own home, regardless of what your college says.
But if your college has rules against marijuana use – and almost every college in the country does – you could get in serious academic trouble for smoking on campus, or even coming to campus while high. That includes your dorm room, if you live on campus.
Some colleges may allow exceptions for medical reasons, then again, some may not. For example, Georgetown University explicitly prohibits the use of marijuana for recreational or medical purposes. The best way to find out if your school can accommodate you is to thoroughly read your school’s code of conduct, and speak to an administrator about it.