It is a well-known fact that, at least in American colleges and universities, most professors are highly trained in the subject matter of their chosen discipline but receive little or no formal training in how to teach that subject matter. These professors (including most of us) have learned teaching by experience and from informal observation of our own professors when we were students. This is quite a contrast to the training received by elementary and secondary school teachers. We will discuss the "why" and "who" of the training of teachers and then turn our attention to the question of "when" and "how". To this end we will discuss what has been done in the Statistics Department at the University of Missouri-Columbia. We provide versions of handout given to them.