But how much time in the American 8-hour school day is actually spent on education? A lower student-teacher ratio (i.e. 1:1) can drastically decrease time requi

But how much time in the American 8-hour school day is actually spent on education? A lower student-teacher ratio (i.e. 1:1) can drastically decrease time required for education. (I'm ignoring time required for other things like social activities, etc.) It's definitely a tradeoff!