help me please! i have a 4 and a half year old who is a handful ! a couple of weeks before xmas there was a handfull of aggressive incidents at school which really shocked us as he's never been in so much trouble. it could of been a handful of reasons as his best friend had left, he'd fallen out with his girlfrind and the routine changed at school.this term he has settled down well but having spoken to his teacher this morning she said he was doing fine but she thought it was sensory overload. what does this mean