It seems like it depends on what the kids were doing. From the article:
So...if they were just throwing paper towels around then they should be required to pick them up. The article says they were told to clean up human waste (allegedly). If they created the waste and didn't...ahem...put it where it was supposed to go, then they should clean that up too, IMO. If they just threw some paper towels around and were forced to scrub toilets, that would be excessive. The problem is that the article isn't terribly specific so it's hard to say whether or not the administration went overboard.