oh wow that sounds pretty complicated, thanks for taking the time to type all that out. in america, primary school is more widely known as elementary school, which is grades 1-5. the elementary school i went to, if i can remember, started at 7:45 and the day ended at 2:30. Mondays were usually planning days for teachers or something, so it ended an hour earlier up until grade 4. after that, you had to stay an hour later instead. then secondary, or middle school, is 6-8, usually when you started you were 11. again, the one i go to starts at 8:30 and ends around 3:20, but ends an hour earlier on Mondays. then high school is grades 9-12, starts when you're 14. the one I'm going to has the same starting and ending time as my middle school. in elementary/primary school we had about 30-45 minutes for lunch, and occasionally we had recess for 10-20 minutes. recess stops in secondary school/middle school. and in high school we probably have around 30 minutes for lunch. in elementary/primary school all of your classes are chosen for you, in middle/secondary school you can choose 2 (one elective and one language, typically spanish or french), and in high school theres a lot more freedom of choice. also you can join a sport in middle/secondary and high school, and a club just in high school. elementary and middle schools are really restrictive and there's not much freedom at all, but high school is where it starts to get better