I had a similar routine, which basically meant that my classmates and I were up 6:30-7:00, in for 8:15, classes until 4:00pm (plus a short lunch break and early morning break), 2 subjects set homework p/d and each subjects homework was meant to take 1.5 hours, so I'd arrive home by about 5:00pm, then do about 3 hours of homework, and eat, which would leave me at about 9:00pm looking at about an hours free time at home - which given the tiredness I was left in by the schedule, was mostly spent... seated.
Best thing about it? I gave up gymnastics (which I did 3 hours a day, for four days a week and then 5 hours a day each day of the weekend) in order to attend that school in order to simply get "good grades" (which, admittedly, I did) and I was bullied for a good 6 years. This is what the education system is doing to children.