What a fascinating discussion. I've just read through the whole thing and many thoughts have jumped to mind, but many of you already posted some comments and observations I've had.
My perspective on this may be easily dismissed, and that's OK. I don't have kids. However, my two stepsons are products of a rural public school system in Virginia, and honestly, I'm fairly impressed with most of what they learned. Their mom is an elementary level teacher in that same district. They both did very well in school and were accepted with scholarships into two of the most competitive arts colleges in the country (Berklee and MICA). My husband and I attended public schools. My mom taught in public schools, etc. But that's beside the point -- we all have anecdotal evidence to support our opinions.
I have a kind of unique experience with the homeschooling movement because I worked at an independent (private, non-church-affiliated) school for nearly a decade. That school also has a homeschooling division and provides homeschooling curricula to thousands of students all over the world. I worked there in the late 80s and into the 90s, when home schooling was making some news headlines for accreditation standards being implemented in certain states of the US.
Twenty years or so ago, it seemed that a much larger percentage of homeschooling families were homeschooling for primarily religious reasons. There were plenty of very sheltered children only learning things that their parents wanted them to learn, and being denied any education of subjects that their religious beliefs didn't support (evolution most famously). This was always one of my concerns about home schooling -- the parents being the ONLY source of information for their children. Granted, this is an extreme, and I think most homeschooling families out there now are motivated by factors other than religious division. But many of those impressions of a sort of cultish type of education remain in the public mind.
I have met many homeschooled kids, as well as private-schooled, and public-schooled ones, and guess what? There are socially-awkward, ill-educated people from all of those backgrounds. I cannot attribute lack of social skill or poor education simply to what form of schooling a person had. There are too many other variables. Correlation is not causation and all of that.
But here is one of my big concerns -- Gaylene introduced the thought, and what Aziraphale wrote bears repeating:
"As for the many "ordinary" children whose parents homeschool because they don't like the school system? That's what undermines the system. It's a vicious cycle. The more committed, involved parents who don't send their kids to regular school, the worse it is for everyone. Plus, the homeschooled kids have the many disadvantages that the article (and others on this thread) have outlined."
This. I'm not saying that people shouldn't homeschool if they decide it is the best choice for them and their family. It is a MASSIVE commitment and I tip my hat to anyone who takes this on. But I really wish the public were more committed to making the public schools in this country the best in the world. We're all in this together, folks. As much as I admire the DIY spirit of homeschooling, part of me is afraid it's yet another way our culture is moving away from helping one another and just taking care of "our own."
Stepping off my soapbox now. I did read the original article and even though I am sympathetic with some of the observations, I really disliked the combative, superior tone, and they turned me off straightaway with the "sotard" term. I'm sorry, that's just awful.