In the USA, average amount of time spent in homework is* about 7
  hrs /week.* Average school day is 8 hrs.* Sleep is about 8
  hours. You have to subtract the sleeping time; its inaccessible.
  Average 9 hrs out of 16 waking hours is spent in or about
  school.* We're at 57% of a day spent on school. Then there is
  travel time: The average travel time on a bus to school is 35
  minutes there, 35 back.* Let's call that an hour a day. Now
  we're up to 10 hours a day out of 16.* 62.5% of a waking day
  spent on school related things. Now I will expand to add up the
  little things that take away from free-time in a kid's average
  day with the assumption that these are times where they don't
  have much autonomy: Now you have approximately 8 minutes for
  breakfast and 20 minutes spent eating dinner (US Average).*
  We'll call that 1/2 hour. 10.5 hrs a day spent not having to
  yourself.* Then you have time spent on hygeine: US Average is
  1/2 hour - 1 hour. a day.* (I imagine teenagers would be more
  like the hour - primping and preening; appearance - much of the
  time with hygene is spent BECAUSE of having to go to school. So
  now there are 11 hours a day between school, family obligations,
  personal hygene, much of which is making yourself presentable
  for school. 5 hours left a day.** Out of 24. 20.8% Free time.
  79.2%: School-related, Sleep, Eating/hygene. But it's easy to
  tell any story with statistics;* Using one set of metrics, you
  show that a minority of time is spent with school; using my set
  of metrics, a majority of time is spent with school. [with an
  emphasis on "What's left over for the individual?"] Parents do
  not control a child's day once they enter the education system
  as it currently stands.* I didn't even include sports; I could
  easily add the recent push for encouraging sports in kids; which
  adds up to even more time related to school; Everything you said
  is true: If you don't graduate high school or vocational school,
  your employment options are quite limited.* That is how things
  are currently set up. Good schools work well for those they work
  well for.* They worked for me.* They worked for you. Do I have
  an alternative I could present to a community that's complete
  and full and entirely researched, tested and the like? No. It's
  a work in progress.* This is part of that work for me. You can
  dismiss what I'm saying.* I do not need to convince you that
  there are problems with the current system that need to be
  solved.* But I am grateful for the exchange, because it
  challenges me to further clarify my thinking and presentation.
  You've made it clear that you won't budge in your position.*
  Things are fine as they are.* That's my take; correct me if I'm
  mistaken. But I know of kids who are cutters; a boy in my 6th
  grade class was tormented by a teacher and jumped down from the
  3rd flight of stairs to "end it"; in his note, it was the
  criticisms of the teacher that brought him to it.* He made it
  thankfully; and has grown to be a very intelligent guy. The
  system works for those it works for; but some people crack under
  the pressure.* Why should that be?* What's missing in the way
  things are being done now?