[netjiro]

> I think it is a joke that

Standards change greatly with time and it is a joke to believe that applying the same standards to everyone will get a good outcome.

Anecdata: I would have loved to get the possibility to study higher math at high school level, at school. I had to dig it out on my own since the local school topped out after basic calculus, linalg, statistics. I was not alone.

Today I would estimate that top 5% could easily and happily handle multivariate, ode/pde, etc in high school given proper support and encouragement.

Top few percent learn several times faster than average. What is the point, other than ancient ideology, to slow them down and hinder their learning progress?