IMO, if you're caught with a gun on school premise's that does not permit guns, school expulsion will probably be the least of your worries. Too, if you park your car on school campus(your post wasn't clear on this fact), check your laws/rules pertaining to this as well.
Since you are attending a 'private' school, they are entitled to set the rules as they see fit and I assure you, being a school, they(school) will have the fullest support from the local LE when it comes to enforcing the laws of the school as well as state laws pertaining to guns on private property.
In short, know the gun laws of your state pertaining to schools,private property and adhere to them by the letter or risk incarceration, loss of your carry permit and more likely...gun ownership period and of course expulsion.
Oh, and by the way, get involved in trying to change the gun laws as they now stand for many university's.
