I think every case is different. In my case my mother was a stay-at-home mom, and my dad was the breadwinning computer engineer. My mother didn't understand much of the work, and my father spared little time to teach me, so they gave me my books and expected me to figure them out and get it done. Mom was able to grade my work, and dad would help with advanced mathematics and scientifics. My father hated literature, mom loved it, and I eventually warmed up to the beauty of it.
It is variable. That's a fair point. I also agree with you that there is an issue of socialization. However, my contention is that there's a lot of horrible stuff going on in public high schools. Bad influences. Oddly, whenever I see teenage school kids funneling into McDonald's, much of them seem immature and part of the punkish/whiny pot culture. Scrawny tall boys who don't eat much because they smoke pot (trust me, I'v lived with enough people like that to discern it), girls who are extremely naive and craving attention, etc. I didn't and don't need that sort of influence, and am grateful I didn't have to go through it in high school. People with ADHD aren't well-understood by cruel adolescents. And besides that, a lot of young teens are, well... stupid.


Socialization can be found in many different things. Not just high school where you basically roll the roulette on your child's well-being and development.
I daresay indoctrination has become a major part of our public schools.
Meh.
Obviously there are always exceptions: Some kids will do very well under ANY circumstances.
I'm pretty familiar with almost every aspect of Texas and Colorado public schools as an administrator, teacher, father, husband-of-teacher, and of course having attended them in Hawaii, Louisiana, Oklahoma, Virginia, and Texas.
They are PUBLIC schools, meaning that the exposure is to quite a wide range of people, many of whom you would not choose to encounter otherwise: And I'm only talking about the teachers!
The common denominator for educational success is not really the quality of the school, but a family's commitment to learning. You can take a Vietnamese (or Polish, or Indian or Haitian or Mexican or Nigerian) kid right off the boat, throw him into any school in the USA, and he WILL SUCCEED despite the odds, not because the teachers were either unionized or not, or paid more or less, or the equipment included the best technology had to offer, or because ACT scores were higher, or because most other students were the same race, but
because the kid wanted to please his parents, and the parents valued learning. If you accomplish this, then your kid will learn at home, at public school, or in a tin shack.