ABC News' Yunji de Nies reports: In a quintessential first lady photo-op, Michelle Obama spent this afternoon reading to a group of children. The First Lady visited a group of third graders at the Ferebee-Hope Community School in Southeast Washington, who participate in the "Community in Schools" after-school program. According to her press office, her visit was intended to highlight the importance of after-school programs, particularly those for lower-income children. Mrs. Obama read the book, "Alexander and the Terrible, Horrible, No Good, Very Bad Day" by Judith Viorst. Afterwards she and the children talked about what makes a bad day (gum in one's hair, falling in mud on one's birthday) and what to do on such occasions (remember there's always tomorrow). "Every day isn't a good day, right. Nobody's life is perfect and nobody is going to have a great day every day. Everybody has a bad day -- even me. Even the President of the United States has a couple of bad days," Mrs. Obama said. One child asked if Mrs. Obama thought it was hard to be the first lady. She does not. But asked if it is hard to be the President, she responded, "It's very hard to be the President, yes. Being the President is one of the hardest jobs in the world, I think, because you're dealing with every kind of problem you can imagine. Almost anything that goes on in the world, at some point the President has to think about it and help fix it." Mrs. Obama continued, "So you imagine walking up every day, thinking about the biggest problems that are facing this country and the world, and people are looking at you for the answers, right -- it's a tough job." The First Lady said all of the children could help the President in his job by doing what they're supposed to do, working hard, listening to their teacher, and lastly, never quitting. "When something gets hard, because it will be -- there will be plenty of things that will be hard for you all; there are things that are hard for me -- will you promise me that you will not quit?" she asked. The children agreed to do so. "Okay, because if you do that, you will help the President so much. If you do that every day -- from now as eight, nine, 10-year-olds until you are grown-ups -- you will help the President. You'll make his job a lot easier," she told them. The First Lady then high fived several of the children and posed of a picture, before holding a closed-door meeting with several of the after-school program's administrators. FLOTUS fashion watch: Mrs. Obama wore a navy blue sleeveless dress with white polka-dots.