@springspring
mr mark shouts at the kids because they deserve it. Hes just following the rules by telling the boys to the tuck their shirts in so you cant blame him for that. I think you are going a little too far by saying that he was 'harassing' the children. The teacher probably couldnt complete the course because the students wouldnt let the teacher to his/her job. As for your childs playful attitude have you ever considered that it may be your child's fault or maybe one of her friends influence. (no offence intended)