Public education is being turned into crap on purpose. It’s an austerity measure. People who care about their kids and have the slightest means to do so will find an alternative option to educate them. This is a brilliant way to introduce austerity without using the word or betraying your real purpose.
So if you wonder why first-graders are being taught that there are 50 genders, why good books are removed from the curriculum and substituted with unreadable crap, and why future teachers get less and less training in their disciplines – this is why. The public option becomes so low-quality that you are forced to use your own resources to substitute.