Abstract: Fisher’s medical school experience and training are described in this chapter. Medical education and medicine in general at the time of Fisher’s matriculation seem quite primitive and undisciplined by today’s standards. A very brief review of the history of medicine and medical education up to that time places the situation during the 1930s when Fisher matriculated into perspective. William Osler’s career, which predated but influenced Fisher, is described. Fisher’s medical internship at Henry Ford Hospital in Detroit, Michigan, is also briefly discussed. During his entire medical career, Fisher maintained a strong commitment to accurate measurement and quantification of physical signs and observations, a discipline he first learned in Toronto as a student.