Sorry I abandoned ship like that, it seems now, I have no better advice that what the other ladies have said. I echo the other post about questioning quthority not necessarily being a bad thing, people like that are the ones who make changes when they grow up, and will stand for what they believe rather than be Yes people.
when i took my son to school this morning the family liasion officer mentioned his behaviour to me as well. i informed her i am waiting for a call to arrange a meeting and asked her to chase this up for me. i'm hoping someone will ring once the school day is done.