Do your children from age 11 have to be at school at the same time every day and do they end their school day at the same time every day? And do all children in the school have the same start/end time?
Asking because here in France the start and end time are different every day, depending on the child's individual timetable. Which makes childcare at the beginning and end of the day horrendously complicated.
And, if the timetable is not set in stone, when do know what it will be - on the first day of term in September, or before?