Our KS1 gates open from 8:40am and the school day ends at 3:10pm = 6.5 hours at school.
Our KS2 gates open at 8:45am and the school day ends at 3:15pm = 6.5 hours at school.
6.5 x 5 school days = 32.5 hours a week in school.
This is in line with the government expectation that the school week should be at least 32.5 hours.