This is a horrible tactic that is, in my opinion, rude and counter
productive. That teacher has to deal with those children in future and
humiliating him/him in public in front of his children is no way to behalf.
At least the children have the excuse that they are children.
I would suggest that the best way to deal with such problems is to take the
teacher aside quietly tell him/her your problem and if he is not helpful get
the name of his school and right to the head master. If he won't give you
it, find out from the museum what school it was and write.
> You could always try the tactic I once used when faced with an extremely
> unruly school party that was running amok while the teacher stood idly
> by. I went up to him and very, very loudly, so the whole damned site
> could hear, complained about the behaviour of his brats. Before he had a
> chance to get a word in edgewise I proceeded to totally humiliate him in
> front of his now silent and gawping schoolkids. I doubt any of them had
> heard a teacher being verbally dismantled before, and I suspect that
> some of them learnt a few new words, but it had the desired effect, and
> with a very red face he ushered them away - in silence :)
> Jon Guite