I completely agree with Mr. Koch. For example, if you wanted to be a doctor, you'd have to major in pre-med and go to medical school. If you want to become a nurse, you've got to go to nursing school after high school. If you want to work in hospital administration you might find yourself majoring in business. If you want to do medical science, you'd have to major in biology or another hard science. So if you can refine your question somewhat (or ask a new question perhaps) we might be able to help you out more.