>No, the most capable students should be homeschooled if you have the opportunity

I disagree. Your mileage may vary, but i was homeschooled and the end of elementary and beginning of jr high. It was absolutely devastating to me socially. Socialization is honestly the most valuable thing i learned in high school.

I honestly don't think that you can learn that many adults are horrible people without high school, and at least in high school there is limited damage that can be done, say, economically (of course there is always, on rare occurrences, and god forbid, potentially fatal emotional harm).

I sadly think that it may be that the younger these kids learn about society, the better. Humans are evolutionary beings, we have innate desires and drives, many of which are extremely anti-social. The sooner we learn that the better in my opinion.

A compromise solution is to combine homeschooling with deep involvement in other social activities like sports, bands, choirs, church youth groups, boy/girl scouts (or other similar things), etc. Homeschooling really does have advantages, and I hope its possible to overcome its disadvantages.

One thing that worries me about any form of schooling is "avoiding the biases of the teacher" - how do homeschoolers achieve this?

(It's less of a problem in schools because of the number of teachers, but it's still a problem there).

Well, as you allude to, I don't think there's a general solution; even a bunch of school teachers who are all different people are likely to have come from a group with fairly homogenous views. I suspect some parents who homeschool do it because they can teach to their own biases, while some do it without awareness of the problem, and others actively attempt to find ways to expose their children to things outside their biases. Those in the first and third groups probably think their way is better than the imperfect delivery of government-mandated biases (for better or worse).