View the following videos before leaving your comments on the discussion thread.
Below is a simplified overview of the history of unions in general, not specifically teachers unions.
The link below which you will need to copy and paste in your browser, is a website that provides a brief news story on the increased public attention being placed on teachers and unions.
http://www.cbsnews.com/video/watch/?id=7357660n
Above is a clip from a speech given by Diane Ravitch, research professor of education at New York University and historian of education.
Above is a clip that provides commentary that is speaking on behalf of the documentary "Waiting for Superman".