For the third year in a row, Stanford University brought together scholars, explorers and artists to present TEDxStanford; the May 10 event included Prudence Carter, professor of education and faculty director of the John W. Gardner Center for Youth and Their Communities, talking about how diversity in a school is not in itself sufficient to bridge academic gaps. In her studies of different schools, she explores the conundrum of how the most racially mixed schools don't necessarily foster enhanced cultural flexibility and a greater ability to cross boundaries. "We have to concentrate on the social and cultural environment of the school if we want to understand more effectively how to move kids from the margins to the center of education,” she says.