I know many home school children, and the common idea that they are not socially educated, or well adjusted, is a myth. Most home schooled children do not sit at home all day - cordoned away from the world. They are usually involved in as much, if not more, activities outside of the home as public schooled children. They have friends in their neighborhoods, and friends they meet in home school groups and their home school activities. As a matter of fact the home schooled children I know are not only generally smarter, and the adults (home schooled) more successful and happier in life, but the kids are far more socially adjusted than the kids that go to public schools.
Public schools by in large create social constructs that do not exist in the adult world. The home schooled children can converse and interact in a healthy way with both young and old - instead of their exclusive peer group.
I home school my children. Yet we have an active church social life, they take piano, wrestling, archery and numerous other peer group events. Plus, on beautiful fall and spring days - when most public school kids are shut up behind brick walls wasting their time in classes with 30+ children learning all of nothing - my kids are outside riding their bikes, exploring the neighborhood, etc.
The other advantage is that if I see other children mistreating my children, or if I see my children mistreating other children (or adults) - I can provide the proper discipline and education in the matter; whereas a teacher wouldn't even think to take the time and deal with the problem. This is not to say I helicopter my children - but I am more aware of issues than a single teacher might that has to keep track of 30 to a 100 or more students at a time and I care more than a teacher would. And thus we come to why we are having this discussion in the first place. The article was written by a guy who had a teacher that was not really connected to him, and his parents were not aware enough of the problem to notice and do anything about it. And the bully's parents the same...
What could have happened with this guy? Had something not turned in his life, he, like many others may have committed suicide and our world would be at a loss for whatever service and good he has thus far rendered.
I think the question really should be this: How is it possible that public school education can teach PROPER socialization - when the evidence and or track record is that these schools produce anti-social behavior and dysfunctional children at such a high level?