Most parents just aren’t well versed in all subjects enough to be home schooling.
A lot of schools, at least private ones, would not grade how correct you are, but on how logical and presentable your arguments are.
Not to mention the amount of interactivity between children of their age are crucial, or the fact that if one day you want the kids to study abroad or go back to school system, the amount of hurdles and the discrimination your children will face is unimaginable.
I am fortunate to have studied in Asia, UK and Australia. My interest in economic was ignited by my teacher who is an Austrian economist and often raving about how CB are nothing but marketing firms whose job is to convince the society they have total control of the economy. (When it’s 99% through open market operations)