Part of the reason could be taking less than 15 credit hours. At Indiana State University, that's not the case.
"Most of our students do take 15 hours a semester so they are on track to graduate in approximately 4 years," said Joshua Powers, Associate VP of Student Success at ISU.
ISU junior Levi Griffin takes 17 hours. That's because he is a part of the Air Force ROTC, but he always aims for five classes a semester.
"I got Air Force ROTC which kind of unevens things for the 15 total but usually you'd go with 15 or above just so you can graduate on time," said Griffin. "4 years is typically how long it should take."
Powers says the few that do take less than 15hours, may do so because they work on top of going to school.
"The ability to manage a full, typically 5 course-load while they're working, maybe they have to commute a long distance to school or those sorts of things," Powers said. "Those would be real good reasons why a student might choose to go something less than 15 hours."
Powers says another reason some students take less hours is because they withdraw from a course during the semester.
"Where they might fall behind would be a decision to drop a class for whatever number of reasons, and then they're more limited in options to take a class the second half of a semester," added Powers.
"If you do take 15, have a backup plan in case it doesn't pan out," Griffin said. "If one class is too hard for you to take, just rotate it out and see if you can get another class in there to keep at 15."
For Griffin, graduating on time is very important.
"Getting out of here in 4 years would definitely save you a lot of money."
Most bachelor degree programs are 120 credit hours.
Mathematically, taking 30 hours a year would keep students on track to complete that degree in four years.
For more info and statistics, visit the "15 to Finish" website: http://www.15tofinishindiana.org/