Check out this article in the Boston Globe about a recent court decision that:
"'The constitutional right of parents to raise their children does not include the right to restrict what a public school may teach their children,' Wolf unambiguously wrote in dismissing a suit by two Lexington couples who objected to lessons the local elementary school was teaching their children. 'Under the Constitution public schools are entitled to teach anything that is reasonably related to the goals of preparing students to become engaged and productive citizens in our democracy.'"
Wow. Interesting that in cases we read in constitutional law, the rights of parents precisely did extend to their education... and from there we eventually got this somewhat fictitious "right to privacy"... and from there... the state can suddenly determine education? I missed something.