What do you think will happen?

So me and my friend(both under 21) were drunk at our college and decided to steal one of those mats that goes in like restaurants. Stupid, i know! Someone working there ran after us and brought us back though. Earlier in the night I was at a frat, and took some of their mail as a joke, and scared of the police coming tried to dispose of it. REALLLLY stupid i know! This is all going to student judicial affairs now. The cops said a range of things could happen, and i dont know if they were trying to scare us or not when they said I could get kicked out..but it worked! What do you think will happen?