That's always been a problem for the CC- especially in a metropolitan area. For most of the successful students graduation is not the final outcome. There are two major categories of student for which this is true:

(1) The student has a degree in, say, accounting, but wants to go into, for example, physical therapy or medicine. She needs to take some science classes, but has most of her college requirements fulfilled. She can do this at the cc part time. (2 The student intends to pursue a four year degree. He doesn't need to graduate from the cc to do so; he just needs to fulfill (what some call) a transfer block. As a case-in-point, the cc at which I used to teach had a physical education requirement for graduation. A long-ago president instituted this rule, and nobody changed it. Most transferring students don't want to spend the time and money for this requirement just so that they can say they graduated. They fill their transfer block requirements and go.