It's interesting - ninety per cent of the responses have been knee-jerk rections, only a very few have asked icemaiden to ascertain the full facts before leaping to any conclusions in the way that almost all posters have done - with merely the barest information on which to make a judgement.
I recall my middle daughter coming home aged four, advising she had been told off for 'doing nothing' at school.
At Parents' Evening' a few nights later, we got the 'other side' of the story -
having asked for permssion to go to the toilet, our daughter was absent for twenty minutes, and when the teacher went to find her, she was lying on the floor of her toilet stall with half her body wedged under the partition, so she could sing Christmas carols at the top of her voice to the chilkd in the next stall!
Teachers are not stupid - neither are children. Get the full facts first, instead of making a potential fool of yourself - as most of the posters here seem keen for you to do.