NO, of course not, they care about one thing and one thing only: their own power...and even a very liberal newspaper editorial page sees through their motives:
"But the union, frankly, had been backed into a corner on this issue. Decline a request from a successful inner-city school that has gotten national attention and you look like obstructionists. Agree, and run the risk that other Denver schools will want the same thing and your organization ebbs into irrelevancy. So the union tried to come out somewhere in the middle, granting waivers but not buying off entirely — a move that ends up smelling of desperation."