Your wrong. Sorry, don't be talking about things you don't really know.
School = prison.
You give up all your rights when your on their property, not consenting to a search? Okay, go try that. See if they give a shit.
Besides that, who the hell mentioned anything about a car?
Well... If he actually had it on him, then they will have a greater chance of finding it. Police can search your outer clothing for weapons, so you see where I'm coming from. Where else would he question them searching him? His locker? No, the school owns that, but the car is your property. Any other locked places that are commonly searched?
Also, they can't violate the 4th amendment without you agreeing to give it up. Like the person above me said, you can break the contracts that you signed, and your right they could remove you from the school, but they would have to be hearing first to, so are they really going to expel you for insubordination?
At the least, if you have serious drugs in your car that the cops will charge you with, don't consent to the search is all I'm saying. They literally need a warrant to search your property, if it is locked, without probable cause.
I know what I'm talking about, you don't just loose your rights because you are at a school. With that said, you can get in trouble by the school for not following their rules, but my info will help if you are legally worried about getting in trouble with the law.
So yes, I know what I'm talking about, the supremacy clause clearly states nothing is more powerful than the constitution, so you still can choose to exercise your 4th amend. rights.