Some students returning to Appalachian State University a day early for spring classes will be presented with a challenge. It's one we all would do well to contemplate.Monday is Martin Luther King Day, a federal holiday celebrating the life and achievements of the influential civil rights leader. In recognition of those achievements, about 200 ASU students will again take up the annual MLK Challenge, now in its 13th year. Those students will work in teams to accomplish a randomly assigned service challenge for the day. The tasks are often seemingly impossible — until they are accomplished by working with the community.This is a fitting tribute to the seemingly impossible tasks Martin Luther King Jr. set before himself. Among those were the Montgomery Bus Boycott in 1955, the Southern Christian Leadership Conference founded in 1957, the Albany Movement in 1961 and the March on Washington in 1963. Each of these challenges was met successfully by King due to his leadership and the willingness of others to march in step with the vision that all men and women are created equal.The tasks before our local students won't be easy, but the end result will be a reminder of what a community can accomplish together for the greater good. This is King's legacy. This is worth our contemplation.