If you believe this than a parent has no right to know a child’s grades, if they are misbehaving in school, if they are sick etc. You could even argue a parent has no right to take part in their child’s legal criminal defense as well.
Once you reach this level of thinking....the kid doesn’t need any additional schooling. By age 8....wrap it up, give the kid a drivers license, and send them to BK to be a burger-flipper.