Being open-minded, I'm willing to entertain the idea that teachers' unions are not just bad for student's, just bad for taxpayers, But in reality I expect it's some of both.
I mean, what's the point of teachers' unions if it's not to keep bad teachers around and make acceptable teachers more expensive for taxpayers?
Those who claim teachers' unions aren't doing these things are practically calling them dues stealing crooks.
hmmmm... That sure don't smell like open-mindedness. Smells like boiler-plate right wing dogma that fails to consider the complex realities of the situation.
Teacher unions exist to represent the shared interests of teachers. It is not actually in the interests of most teachers to keep the worst teachers from getting fired. The rest of the teachers are the ones forced to deal with the poorly taught students of prior bad teachers, plus be harmed by the indirect effects bad teacher have on how teachers are viewed, paid, and typical irrational over-reactions to standardize test scores being lower than other countries.
I am not saying that many unions don't protect bad workers at the expense of the majority (I am actually open minded), just that it is silly to argue that doing so is an inherent function for which Unions would exist.
What is in most teachers interests is not being fired without good cause. Thus, putting procedures in place that require the demonstration of good cause makes sense. Most clearly warranted firings should be able to fulfill those requirements. Yes, it means that when a principles thinks a teacher is bad but has no evidence to show it is more than personal bias, they can't just fire them. Sometimes the principles "gut" will be right and a lousey teacher stays in the classroom.
Another teacher interest is in students being treated fairly and being prepared to learn when they are in their class. Teachers tend to like it when their kids have some interest and ability to show learning from the instruction. It makes teachers feel all warm and fuzzy inside. So, they want their Union to fight for things to ensure more kids feel safe at school, are fed, have learning resources, and in fact, were already taught the info they need to benefit from the next level of instruction. That makes teachers jobs much more rewarding and effective.
Again, I am not saying all teacher Unions focus on these issues like they should, just pointing out the obvious functions that Union would be created for and could be used to improve.
As for the poor taxpayers, the lousy teachers are almost entirely their fault. They are the result of the lousy pay many taxpayers demand teachers get combined with the way taxpayers shit on teachers every chance they get, hampering teachers ability to do their jobs, and thus eliminating sufficient incentive that most people who would make great teachers would have to get into the field. They are the cause of the massive shortage of teachers in most states which makes schools unable to fire bad teachers because their would be no one to replace them.