There is a big assumption being carried out that Betsy Devos is part of a Doministic takeover of education. She, like most Republicans, is pushing for school vouchers. This is nothing new, it has been going on for decades.
In the urban areas people, rich and poor, send their kids to private schools, mostly run by different religious groups. President Obama sent his children to the same school Chelsea Clinton went to, run by Quakers. While the GOP is up front promoting vouchers. the Democrats rail against them and say how they support public schools, then they send their children to private schools.
But these private schools do more than take in political children, they effectively poach star athletes from public schools. A classic example is LeBron James, the best player in the NBA. The NBA took him out of Cleveland high schools, not public but St. Marys High School. Look at the national high school basketball rankings, the top teams are all religious schools.
The message is clear, the rich and powerful send their children to private schools. Public education is being pushed out, not by raving evangelists, but by even those who say they support public education.