What we need then is an open forum that helps teachers make informed decisions. Even then teachers should be 'able' to work for whom ever they choose. I know several talented bright young teachers who actively choose to work in difficult/low performing inner city schools in the UK.

Learning can take place wherever there is somebody willing to teach well. The students that get sent to bad schools deserve a good teacher no matter what; they are the priority once the classroom door closes, not the politics.