* Credit transfer: Students may be able to transfer credits from previous coursework, potentially shortening the time.
* Course load: Taking more credits per semester can allow for faster graduation.
* Major requirements: Some majors are more intensive and may require more time.
* Part-time study: Studying part-time will significantly extend the time it takes to graduate.
So while four years is the standard, it's possible to graduate sooner or later depending on individual circumstances.