The most famous people in Teacher College, Columbia University

I worked for EdLab 5 months, Pranav(my college) for 4 months, all of us don't know who is the famous people in Teacher College, Columbia.

The most famous people is "John Dewey" 約翰杜威
There is a head stature at the entry 1st floor, we saw John's head stature every morning. How can we don't know who is "John Dewey". Haaaaaaa, so embarrassment.