My business law professor listed his name as Dr. So and so on the exams,
sylabus, etc. I asked him about it too, and he said it was school policy.
Most of the professor's at my school aren't into titles. There are a few exceptions.
My energy economics INSTRUCTOR insisited on being called Dr. or Professor.
Another said call me by Lisa or professor so and so, but never call me Ms so and so.
Another guy requested he be called by his first name. All were PhD.'s. My brother
is a PhD, and doesn't give a crap what people call him. So I call him "overeducated bastard".