Currently, your son, 12-year old Sean is your only child here.
Sean is usually a good kid in most things, but his standards of cleanliness are a bit lacking. It's not that he's just a bit messy - he comes close to being a slob. You and your partner have fought about how much freedom he should be allowed, but there are certain things that he's just not allowed to do - like leaving laundry, trash, food, or dirty dishes in his room. Recently, because of repeated violations, he was forced to stay in on a weekend day until his room was clean to your partner's standards. At that point, you warned him that he'd get a sore butt the next time he had a major violation.
Today, a janitor called you out. There was a locker that was stinking down the entire hall. You opened it up to find dirty gym clothes and a sandwich that might could easily be confused with a particularly noxious alien life form. You almost retched.
And yes, it was Sean's locker.
School rules allow you to give a detention or community service for that kind of offense, but it's not considered a paddling offense - especially not a first time. Of course, you know it's not only not the first time, but that he's had very specific warnings about things like this.
So, does your position rule out using outside knowledge, or will the principal allow the parents to deal with this situation?