Yeah, that's what I was implying, but wording it as a joke.
I think parents like this would be better off letting their children go to public school, but staying involved in their education outside of school and encouraging their children to succeed. Most parents aren't cut out to be teachers, let alone teach their own children and retain a positive parent-child relationship (preventing the child from relying too heavily on their parents when they're older), and it's very difficult to replicate the socialization provided by public school.