An article by David Kirkpatrick of the US Freedom Foundation points out that:
The problems of secondary education are hardly a new revelation. In "Secondary Education Reform," written in 1976 by A. Harry Passow, high school was described as "the most absurd part of an educational system pervaded by absurdity."
About the same time, a Carnegie Commission on Higher Education report concluded there is so much duplication between the last two years of high school and the first two years of college, that one or two could be eliminated.
Why not? As Kirkpatrick concludes, "As educators who claim to teach critical thinking and problem solving, why can't we think critically and solve some of the problems of conventional schooling?"
Linked article: Is Traditional High School Obsolete?