A Bachelor Degree, or as some call an Undergraduate degree, requires 120 credit hours to complete.  It is not a calendar-based degree, but rather credit-hour based.  The time a student takes to complete their Bachelor Degree is totally dependent on how many credit hours a student takes per semester.  Our school uses a trimester system, of 12 to 15 credit hours per semester, with three semesters per year.  This method allows our Fast-Track students to graduate in three years as opposed to four.  When you hear or read a reference to a four-year degree, they are referring to a 120-hour undergraduate degree or Bachelor Degree.