He means they are not getting the proper left wing indoctrination.
Started homeschooling our youngest this year ( fourth grade.) It is going amazingly well. Breadth of education? She is learning Greek and Roman History and Latin. She does reading, spelling and grammar every day in addition to math fact practice and a math lesson. She plays violin, piano, takes ballet class and sings in our church’s children’s liturgical choir. The bloviating by this liberal is an effort to make sure there aren’t mass defections of the sheep. He is worried about the potential end of his gravy train.