You'll be best prepared by taking college prep courses while in high school. A recommended curriculum includes: 4 units of English (grammar, composition, and literature) 3–4 units of mathematics (algebra I and II, geometry, and trigonometry) 3 units of natural science (physical science, biology, and chemistry) 3 units of social studies (history, economics, psychology, and government) 2–3 units of a single foreign language If you are planning to study pharmacy, engineering, science, mathematics, or nursing, you should take as many math and science courses as possible in your secondary school curricula. Naturally, the more training you receive, the better prepared you will be for college.