It is almost exclusively a middle class activity. Also not that expensive if one parent is home. I knew many homeschooled kids who were just given a math textbook and worked through it. You only go to math class in public school for about 182 hours a year, so a diligent kid can do a year of math in a few months no problem.

How familiar are you with the experiences and outcomes of poor kids in public schools?

The rich hire tutors or send their kids to $25k-$75k/yr private school. Or both.

Rich families already do this by sending their kids to private schools. Have you seen how expensive and competitive these schools are, even starting as early as Kindergarten?

From personal experience, the average homeschooled family seems to be blue collar

Yes it is. People forget this because they live in a bubble. It’s like remote work, nice for the laptop class, but not possible for the person growing your food and manufacturing your tesla.