On average, nursing school is 2 to 4 years in length. The exact length depends on the type of degree a student is seeking.
All registered nurses in the United States are required to have at least an associates degree. This degree takes 2 to 3 years to earn, depending on the exact school and the number of classes taken per semester. Some nurses choose to seek a bachelor's of science in nursing. This can take 3 to 5 years, depending on the course load. All nursing students are required to take specific classes related to the field of science and nursing.