The role of school leadership--of principals and coaches--must be played out on a systems level to get widespread and sustainable improvement. Successful, whole-system education reform relies on capacity building, teamwork, pedagogy, and systemic reform. The strategies of good coaches and the right drivers for whole-system reform go hand in hand. Too often, however, coaches are unable to do their work because they're asked to do quasi-administrative tasks instead of focusing on student learning, have unclear goals concerning what they are to accomplish in their schools, and don't receive adequate training.