In Pierce, the State of Oregon, whipped into an anti-Catholic and anti-immigrant frenzy, closed all private schools and required all children in the State to attend public school. The Supreme Court held this unconstitutional, and held that parents had a right to send their children to private parochial schools. Although there is certainly some language in Pierce that would support the right to home-school, technically, the issue of home-schooling was not before the Court.
Thank you.