I'm not against setting standards for teachers, but if there is a objective, unambiguous way to judge a teacher's performance and get rid of bad teachers, I'm all ears. So far I haven't. Otherwise it just becomes a shell game.
This is always what it boils down to every time the teachers go on strike. Most people support the idea of better classrooms with smaller classes, better support, and more funds for books, etc (although the cons would balk once it came time to open the wallet), but when it comes to wages the lines get drawn and it becomes about performance and undeserving teachers.
Fact is every profession has it's useless idiots getting paid as much as someone doing twice the work and reviewing teachers (and probably many other professions with large numbers) is going to be subjective at best.
I know I keep going back to this but the government needs to do something about the training before any of this gets sorted out to make it a respected profession again like Finland has done. Without that, teachers will be looked at as glorified baby sitters by enough of the public for the government to play hardball, under fund education and paint teachers as greedy.