Yes, that is the answer to the problem, and the problem is sending your children away to a school in another town where they will be living by themselves, even if it is sending them away to elementary or high school to St. Mary's Kansas.
There are many fields that require higher learning to get a license, like medicine, science, engineering, architecture, school teacher...…., and one can today go to practically any university online. But, if your children have to go to a brick and mortar school because they need a degree in these fields, they can go to a local state university and live at home.
Although online courses or living at home while attending a local state university would be better, I don't think it would fix the problem completely because there is still liberal bias in the course content (depending upon the course).
But yes, the above measures would limit the potential for damage.