U.S universities typically have two sessions per year: the "fall semester" (usually September-December) and the "spring semester" (usually January-May). Each co

U.S universities typically have two sessions per year: the "fall semester" (usually September-December) and the "spring semester" (usually January-May). Each course (e.g., Introduction to Chemistry) typically runs one semester. A full-time student usually studies 3-4 courses per semester. Many universities also offer a small number of courses during the summer break. Some universities allow certain courses to be only a half-semester in duration.