Today my eldest DD year 9 came home later from school than she usually would and when she got in I asked her why and she told me she had been at a 20 minute after school detention for burping in PE while playing netball in the gym. she was upset as she got sent out of the lesson and made to change back into her uniform for the rest of the lesson and copy from a textbook. I didn't know what to say to her to be honest she seems fine now she has calmed down . It sounds silly to me and ridiculous can a teacher do this ?