He’s lost an election, and now his prized appointment has resigned. So what’s next for Mayor Adrian Fenty? Well, he might be heading back to school. The Post reports that Fenty has confirmed that he has had conversations with Oberlin College, his alma mater, to return to the school and teach political science. (Sidebar for happy hour discussion: can you imagine what it would be like to having Fenty as your professor?) After today’s big…