If and/or when our Great Nation crumbles into a third world hell hole, we can look back and recognize that when we lost control of the schools, that was the pivotal point.
I understand why you would say that. Keep in mind that we don't want to be facist in keeping it.
We lost control of the schools when the very first state compelled-attendance, compelled-funded, socialist schools opened in the mid-1800s to early 1900s.
It was inevitable. Socialism always leads to increasing state and then federal control and mandates. It's drive is always toward more and more godless secularism. It's curriculum and teacher training has always been under the control of the most progressive elements. It's indoctrination goals are always controlled by the biggest political bullies.
Solution: Begin the process of complete privatization. Vouchers, tax credits, charters, and homeschooling can help build the infrastructure but the goal must be complete separation of school and state.