11th grade for me seemed quite intellectual. In those 1300 hours of busy work I learned about infinite series, analytical geometry, differential calculus, basic group theory, basic linear algebra, and this is just maths. While I had to relearn most of this in college in more rigorous format, most of my intuition in maths I have from this time.
I skipped maths class to attend rehearsals for the lead role in the school play, and learnt trig from trying to understand how Doom BSP worked.
I also got more from trying to automate Linux than I ever did in those non-practical Logo and Pascal exercises. My school had no concept of task-based learning.
