A friend of mine used to be a TA and she used to say that people have no idea what their children are like at school and often refuse to believe they have believed in a certain way.
I've been volunteering in a school recently and am gobsmacked at how rude some of the children are to staff. Not to me as I'm kind of on the outside of it all, but I am genuinely taken aback by some of the behaviour of the children, many of whom I have known for years and know their parents. Constant backchat, sneering, general rudeness, ignoring requests to work etc. The staff follow the behaviour policy and sanctions are given but I don't get where this all comes from. If I had spoken to a teacher or anyone else in my school like that I would have had my arse handed back to me on a plate. I just wouldn't have done it.
Made me worry what the hell my own are like at school.