I found this petition via Educational Justice for Barack Obama. It is supposed to be signed by "teachers, educators, and future teachers." Perhaps I would sign it if I knew more about how Klein ran the schools in New York City. I know that Klein supports expanding charters schools, which may or may not be a good thing, so I am fairly indifferent on him. Perhaps he could do a better job at talking to teachers, but this seems a bit much:
"The NY City Department of Education under Joel Klein has been run like a ruthless dictatorship – with no input from parents or educators"