As pointed out, a semester isn't that long. If you can, have someone start it up and take it for a spin, enough to work it up to operating temp (including the exhaust) once a week or two. If you can't, and you don't have a trickle charger, just unhook the battery so the electronics don't drain it over the quarter (radio presets and clock, for instance). Put fuel injector cleaner in with the last tank of gas when you top it off before storage. It is a better gas preservative than Sta-bil, as per the advice of the power equipment dealer who rebuilt my snow thrower's carb and fuel system a few years ago. No rebuilds since, and it starts on one or two pulls every time, I think I used it three days this past winter--cleaning up after a single block-buster Nor'easter dumped 3' on us (one day for each foot?!). For such short term storage, IDK if putting it up on jack-stands is worth the effort to prevent flat spots forming on the tires from sitting. I don't think I'd bother but someone with more experience or knowledge than I might chime-in.
Good luck at school!
Ol' Yeller TJ
This message is composed of recycled electrons. None of the electrons was harmed or injured in the creation of this message but they have been shamelessly exploited for this use.
About the car cover, be advised that you can trap moisture inside the Jeep if the cover is left on for long periods of time. My dad left a car cover on a newer mustang convertible for several months. When I took it off for him, opened the car up, there was mold everywhere. It was a pain in the *** to get rid of.
Best bet, keep it in a garage or rent a spot in a garage.