Anyone else think the 3rd series is gonna be the last? I mean, I think they only "need" to be in Community College for 3 years, and I can't think of a feasible reason for them to hang around.
Jeff mentioned that he was taking a four year degree and that he screwed up his strict four-year-plan by taking that second class with the study group.
Full-time community college degrees usually take two years with an associate's degree given at the end. It's only more recently that some community colleges have started giving out full-time four-year bachelor's degrees.
Edit: Also, I think season 2 only corresponds with the second semester rather than the second year. That pattern would leave the show as finishing in 8 or 9 seasons.