#2, pay for performance/merit pay is not fair
#3, teaching diversity, environmentalism, and liberalism helps kids.
#4, Competition for schools is bad
#5, We need to protect free thought, so we cannot fire bad teachers #6, We can't track students by their ability, it's not fair and stigmatizes others #7, we need one size fits all, training for blue collar jobs is not a good idea
Wealthy people do this by sending their children to $25,000 per year private schools. Many liberals do this even though, publicly, they advocate for public schools. Case in point: Obama.