The Social Engineers have forced schools to put mentally challenged kids in the same classroom as kids with MENSA I.Q's. 98% of the Teachers time is taken up trying to help the slowest, the kid with the high IQ gets bored and tunes out. One great advantage to home schooling is that kids with high IQ's who love learning can proceed at their own pace not the pace set by the slowest in the class. Take a look at a math paper they set 13 year olds in the 1920's in the UK. Math Paper. Websites like Kahn academy enable brighter kids to enjoy learning rather than view it as a twelve year prison sentence.
By the time my kids were 12, they were doing Saxon Algebra.
They all were able to take calc classes as incoming freshmen at their respective universities, having qualified for their honors programs.
Public schools are full of “good sounding ideas.”
Egalitarianism and inclusiveness are two of these ideas today.
Pragmatism and objective measures of educational success are not part of the formula.