yesterday DD (15) reported that a teacher at school has stuck a plaster over her mouth because she was talking too much. There is a bit of history about being chatty in class and this seems to be have been jovial and light hearted. DD isn't upset or complaining and she says I shouldn't complain because things would be worse. The teacher also did it to a boy in the class and shouted at him when he took it off. Hence DD keeping hers on!
This feels wrong and actually that this teacher should not be teaching - she retires this year in any case.
Advice please