I support home schooling, but with strong requirements like Pennsylvania used to have:

<< Until recently, Pennsylvania had one of the strictest home-school laws in the nation. Families keeping their children out of traditional classrooms were required to register each year with their local school district, outlining study plans and certifying that adults in the home did not have a criminal record. At the end of the year, they submitted portfolios of student work to private evaluators for review. The portfolio and evaluator’s report then went to a school district superintendent to approve. >>

Pretty scary that "in half the states, children who are taught at home never have to take a standardized test or be subject to any sort of formal outside assessment."