On January 15, Opportunity America and Arizona State University hosted a conference in Washington, exploring the role of higher education as an engine of economic mobility. What new challenges are posed by the push for mass education at the postsecondary level? What can college do – how must it change – to make quality higher education available to an ever broader and more diverse student body? Educators and scholars from four pioneering universities talked about the ideas and innovations that are enabling their schools to offer expanded access while maintaining quality.