President Obama told a group of middle-school students Thursday that he’ll likely go back to his work as a community organizer after leaving the White House. “That’s the kind of work that I really love to do,” Mr. Obama said during a visit to the Anacostia Neighborhood Library in Washington. “I’ll still be a pretty young man” after leaving the White House, he added, and will go back to helping people, bringing business into communities that need it. Mr. Obama will be 55 years old when he leaves office in January 2017.