Professor Chandralekha Singh was the co-chair of the second conference on graduate education in physics, organized by the American Physical Society and American Association of Physics Teachers at the American Center for Physics (ACP) in Maryland from January 31-February 2, 2013. The conference was a forum for presentations, panel discussions and breakout sessions on how physics graduate education must respond to the challenges and opportunities in the 21st century. The 107 participants included department chairs and/or directors of graduate studies from 74 Ph.D. granting physics departments, representatives from industry, national laboratories, and professional societies and graduate student leaders. The participants discussed how to spur innovation and creativity in our approach to graduate education in physics, and shared best practices. Dr. Singh also co-organized the first conference on graduate education in physics which took place in January, 2008 at ACP.