Comment by tombert

I think that there's a reasonably good chance that if school were like that by default, I probably would have done better. It's hard to juggle six classes at a time like you're expected to in American high schools.

If I had a magic wand and could make the education system however I'd like, I'd make it so every student spends the exact same amount of time on the subject, but I'd make it so you only ever manage a single class at once, instead of trying to interleave everything.

This isn't even that weird of a concept, even in the US; American summer schools will often do exactly this. Instead of doing an hour per day over the course of 180 days, you do roughly thirty six-hour days. That's how I took gym in high school, and how I retook calculus (even though I passed the AP exam first-try).