Same here. I get my haircut every 2 weeks or so. Keep in mind its still polite and courteous to tip the barber....
it cant touch your ears at all. and if you were to stick a ruler to your scalp, it cant be more than 1.25 inches thick. it has to be tapered...as in, you can get a number 6 on the top and number 3 on the sides (that's what i get. haha)... sometimes they're more strict on the freshmen's haircuts. but sometimes they arent. just keep it neat and in regs.