I recall this being an issue when I was a student back in the early 1990s. A good deal of the problem was due to students not saving up enough money (maybe should have taken a year off for work to build up their finances more).
Or two or three. That was the norm back when I went to college. Even my daughter took six years to earn a four year degree for the same reason.
Remember how the press worked to convince the sheeple that Sarah Palin was somehow stupid because it took her seven years to finish a four year degree?