While most doctors complete their medical training after receiving a bachelors degree, some medical schools specialize in what is called a seven year program. These schools admit students right from high school to a seven-year medical program, at the end of which they are doctors.
Dentists are trained at separate institutions with specializations in different areas of medicine. While most medical doctors focus on the human body as a whole, dentists concentrate on the areas in and around the mouth. Dentistry programs typically require a four-year college degree followed by an additional four years of study.
Nursing schools teach skills needed for patient care. There are different tiers of nursing -- associate, bachelor, master's and doctorate degrees are available -- and different courses of study to achieve them. Some nursing schools offer specialty training, such as home care or hospice care.
Pharmacy schools prepare students to become licensed pharmacists who distribute medications prescribed by doctors. Pharmacy schools require a four-year bachelor's degree to enter, followed by a three- to four-year program to become a pharmacist.