Why do we need school 5 days a week?

You don’t actually have to have school 5 days a week, but it is dependent on your age, what country you live in, and your school’s policies and class structure.

When I was in High school, I was able to arrange my own timetable any way I liked, provided I was in school for 20 hours a week. My school did classes from 8:40 am til 9:00pm, so in theory, I could have organised my timetable to have classes from 8:40 til 9:00 2 days a week, and had 5 days off.

The reason most schools structure the timetable in such a way as having school 9-3 for 5 days a week is so the time you are required to be in school learning is spread out into manageable pieces. The amount of time you are required to be in school is calculated by how much time the School/Board of education think you need to take in various classes to learn the syllabus for particular subjects in that particular year of school. When you are younger in High school, there are more compulsory subjects, so you spend more time at school, whereas when you get towards the end, there are less compulsory subjects, so you can mix your timetable around a bit and take on more classes you’re interested in.