As a matter of fact, the number of hours in school is actually quite similar with a great deal of overlap in the two programs. Chiropractic has about 4450 hours or approximately 200 hours more than medicine. The overlap of basic sciences is similar but chiropractic spends a great deal more time with the skeletal system, muscles, nervous system, nutrition, exercise physiology, and of course body mechanics whereas medicine learns more about drugs and surgery.