Why it's hard to get rid of bad teachers

The graphic was posted at the Chicago Tribune.

If this topic interests you, you really need to listen to This American Life's 2008 presentation of "The Rubber Room"-

We hear from New York City school teachers about a secret room in the New York City Board of Education building. Teachers are told to report there, and when they arrive, they find out they're under investigation for something. They have to wait in this room all day, every day, until the matter is cleared up. They call this bureaucratic purgatory "the rubber room." Some teachers have been stuck in it for years.

And it's only fair to point out that the problems noted in the graphic regarding weeding out bad teachers applies equally to getting rid of bad doctors.  And bad lawyers. 

Via The Daily Dish.