I almost got arrested for breaking in school!

Talk about a crazy night.  We are moving from our old school building into our new school building.  Since I have to move not only my classroom, but my biology lab, the biology lab storage closet, my classroom storage closet and another science teacher's room who quit a few weeks ago, I have been staying really late packing things. Night before last, I was there until 9:30 pm moving boxes from one place to another.  As I was walking back to the school, I notice two cop cars hovering around my car (which is parked in front of the old building).  They drive off and I decide to call it a night and go home.  Yesterday morning the seniors pulled what is known as "senior prank".  They rolled the yard and inside the building with toilet paper, painted 2013 on the back wall and spread garbage and feces throughout the building.  Sixty kids get arrested in connection with it.  So, yesterday afternoon, I am taking boxes and moving stuff.  My car is the only one in front of the building.  (the other science teacher parks his car around back, close to his room).  I come out of the building around 8 pm and there is a cop parked behind my car.  He gets out of his car and says "hold it just a sec."  I say, "yes?"  He asks me what I am doing here.  I show him my name tag and tell him I am moving boxes into the new building.  He informs me that last night when he made rounds that my car was the last car here last night and this morning all that "prank" stuff happened.  I jokingly say that he got me.  I was pranking the seniors by doing all this and blaming it on them.  He is not amused.  He informs me that the cafeteria door is open.  I tell him that I have not been anywhere near the cafeteria and that I have keys to the front door only.  He then makes me walk the entire school building with him checking locks!  I tell him I really need to be moving boxes.  He doesn't care.  He then informs me that my car is "hot".  Apparently, he checked my tags and every cop in the area is on the lookout for my car.  WTF?  I tell him that his captain knows me and my car.  He angrily informs me that HE is the supervisor for second shift and that the captain doesn't tell them anything.  At this point, I am mentally slapping myself for not having anybody's number from school that I can call and verify things with.  First thing Monday, I'm getting the principal's home number!  The funny thing was that the other science teacher had taken a load to the new school and wasn't around during my fun times.  He did get a good laugh about it when I finally showed up to unload my car.  Now I'm scared to drive around town.  And I realized that my tags expire at the end of this month.  What a great start to spring break, eh?  Luckily for me, the kids couldn't wait to rat each other out, so I'm off the hook.  Whew!