The Wicked Witch...A Sunday School Teacher?

I was curious about the history of Sunday School, so I looked it up in wikipedia. They have a nice short history outlining the work of Robert Raikes in the early 1800's in Britain. And curiously, they list some famous people who were Sunday School teachers -- including two presidents, a Supreme court justice, and Margaret Hamiton (better known to us as "The Wicked Witch of the West").