There is shit to put up with in every job. I think you have to consider whether the good you do the kids and yourself when you KNOW you've helped someone isn't enough to mitigate the harm the kids and you suffer. At some point, maybe you decide it's just time for a change because the shit isn't BAD shit, but it IS the same old shit.

I work with so many teachers who became frustrated. One by one, the good ones jump ship until the kids are left with teachers who either need the money or are hopeless idealists. The really weak and the really strong. I don't know that I'd hang in, but I have to admire those who know they don't want to do something and stop or know they do and never give up. I hope most of the ones left behind are the dreamers and believers.