It's nearly graduation day on Greek.

When this ABC Family drama premieres its fourth season on January 3, some regular characters will leave college for the real world. As this sneak peek proves, that's not always a good thing.

Before Casey and company can take that step, of course, they must actually graduate. With that in mind, check out the following clip from the episode "Defending Your Honor."

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.