Fungo, Olessia is correct.
When I was a student, in Junior School we used to have 5 lessons a day 6 days a week.
They were discussing making it 5 days, but they thought that it's hard for kids to have that many lessons. In high school in the year of graduation it was 6 lessons a day.
7:00 - 20:00 do you mean 13 hours of lessons a day? It is much more than what university students have here;/