What? Graduating from school (highschool or university) is about learning how to follow directions and play the game. To say that a degree somehow guarantees that a person knows how to think critically is ludicrous.
But you're not even making such a modest claim, you're actually claiming that it is the only way to assure people can think critically (even though it's not even a valid way to begin with). Some of us can think critically as children. Do you honestly believe just because you couldn't think critically until you were an adult, that means that hundreds of millions of people that you've never met should be forced into the same fruitless, and arbitrary indoctrination you had to undergo to become adequate in your own eyes?
Are you aware of how absolutely stupid school seems to people who are really, really smart? http://www.lambdassociates.org/blog/bipolar.htm