> Here I had 9 classes every single day. I was not pleased at all.

This is by far the worst thing in any school system... even in Germany, with 6 different subjects every day, it's hard because you shift your entire focus every 45min. Until you're in the correct focus, it needs ten minutes - and suddenly, a third of the lesson time is gone.

Best would be three or four 90-minute blocks to avoid the constant mind-shifting, separated by 15-min (or at midday 30-45min) breaks in order to relax, eat and socialize.