You are assuming that since leftwing indoctrination is the purpose of the public schools, and it is, then the children in them will be indoctrinated.
But that is not necessarily true. Children understand when they are lied to and if the parents give their children support at home, they will grow up immune to the indoctrination. It is however important to discuss issues of religion and social policy with your children and give them intellectual tools to combat the leftwing propaganda they receive at the school.
The Barna Foundation did a study on children from active evangelical homes. Only 15% were active in their faith 2 years after graduation from the socialist-entitlement high school.
In contrast:
95% of the homeschoolers were active.
Question:
So?....If the results are this bad for children in Christian homes and this **good** for Christian homeschoolers why would you believe it would be different for political and cultural outcomes for those children attending the godless Prog run K-12 schools ( government owned and private) s?
In all but the rarest of cases, it's indeed the case that 30 hours a week of leftist indoctrination over the course of 13 years, captures the minds of young people in the grip of Communist ideals.
Decent (but naive) conservatives who argue that concerned and engaged parents can overcome the constant social immersion and political mind melding that goes on in the public schools, are simply whistling past the graveyard.
We've been home schooling our kids for about twelve years now, and despite them never being exposed to the incessant brain molding of the public schools, it's incredibly hard to keep the left's hands off them. It still touches them through television, internet, 'music', and local playmates.