That doesn't explain how there could be home-schooling families (which are generally one-income) at every income level in the U.S. economy.
This generally involves the working parent becoming a wage slave. I certainly don’t find any fault with those who refuse such a life.
Either that or Mom and Dad are helping. You would not believe how many married millennials in my church are having their bills paid by Mom and Dad. It is absurd and unseemly.
I’ve been very impressed with home-schooling families. Kids are their priority and it shows. Some do it on a very working class income.