In recent news here in California, there is a case in the courts now that is reinforcing California state law which basically says "persons between the ages of six and eighteen" are to be in "public full-time day school," or a "private full-time day school" or "instructed by a tutor who holds a valid state teaching credential for the grade being taught".
This has been state law for a very very long time. Yet now, we have scofflaws that claim they have a right to teach their own children whatever they want. Homeschooling is legal in California, as long as it is conducted per state mandated curriculum and by a licensed instructor.
The excuse used by the scofflaws? "Parents should not have to attend a four-year college education program just to teach their own children." It's the old argument, "Oh may god, this is too hard to do right, so I'm just going to do it wrong and be happy!" Lazy, lazy, lazy. Oh and cheap too! You don't care enough about your child's education to pay for it yourself (since you don't want the state to do it)! Mr and Mrs Long, in my opinion, you are lazy, selfish, and cheap jerks who obviously don't do enough reading into anything to know what is the truth. You have no business trying to pass on your ignorance to anyone's children!
That said, it is important for parents to teach their children about their own experiences, beliefs, hertitage, etc. Parental schooling does not mean home schooling. It is not a replacement for a formal education. It is something that should be done in conjuction with a formal education. Home schooling is just a place to do it if the law is followed. Parental schooling is not the same thing. If you don't agree with something taught in the classroom, then discuss it with your children. It is as simple as that.