The U.S. system of urban public schooling is undergoing the most significant and exciting structural transformation of the last 100 years. New models and a laser focus on results and human capital have created proof points around the country, showing us that closing the urban student achievement gap is not just a dream, but a reality. These exciting breakthroughs are being fueled by some of America's most talented, innovative, and civically minded men and women. This report finds that as demand for new, autonomous and innovative schools begins to snowball, there is a real threat of a leadership talent gap -- and talent is the scarce resource that could define the success or failure of this hope-inspiring movement.