The NEA commands a monopoly in education. They are sole recipients of public education funds and have zero tolerance for competition.
Most private schools cost less than half of public.
Public schools are expensive because government bureaucracies are shielded from competition of free market forces and because Americans have historically tried to fix our schools with more money. Half of Chicago's public schoolteachers choose private schools for their children. Public money goes to Catholic and Jewish hospitals to care for the public, and public money supports fire and police forces that serve religious institutions. Public money should be for the education of the public. Bad teachers protected by powerful unions and the NEA from loss of union dues.