He gets to school on time 99% of the time but around 5-7 times a month he will be logged as late because he says he can't hear the bell. His brother who isn't deaf says he can hear the bell everywhere including on the playground etc so he isn't in a quiet area or anything like that. I've been at school at the beginning of the day and change of lessons and it's not like the bell goes and everyone dashes off to their tutor rooms. There will be people being late, going to the office and all sorts, so I can't tell him to move when everyone else does. The tutor doesn't give him detention when he is late but he still gets a red wedge in his wheel on classcharts. Also I would like him to not be late if possible. Any tips?