my DS is 14 and today I have received a phone call from his head of year. They have viewed cctv of my DS lining up for class with his form group, another boy (apparently a friend “messing about”) has grabbed DS from behind and in response my DS has grabbed him back, the other child has then kicked out and smashed a glass panel in a door- accidentally. School have put DS in isolation and are asking myself and the other child’s parents to pay for any damage caused. AIBU to to state my son did not kick the door so should not pay for these damages or should I pay as he was involved in the incident? Should school not claim on their insurance?