Now before everyone gets all butthurt no one is saying that home schooling should be outlawed or that all families that home school are child abusers. However there are an inordinate amount of child abusers who use home schooling as a way of covering up abuse.
For example every child listed in the article I linked to that was a victim or alleged victim of child abuse that was covered up under the guise of home schooling have all been written about on this very website. Those mentioned in the article were Erica Parsons, Hana Williams, Nubia and Victor Barahona, and Dashawn Harris.
As with most things that start out with good intentions a few assholes have to ruin it for everyone else however in this case ruining is the death of innocent children at the hands of their abusers. States need to have a regulation for home schooled kids that at least requires the physical well-being of the child be checked on periodically.