This report describes how teacher leadership has created opportunities to rethink education so that it better meets the needs of students and the aspirations of communities. In it, the authors provide an evidence-based foundation for developing a teacher leadership framework by documenting (1) where and how teachers are leading to make a difference for whole child education, (2) growing evidence on the effects of collaboration on teacher efficacy and teaching effectiveness, and (3) teachers’ access to collaborative opportunities and leadership. The authors close with an approach for developing teacher leadership for the new normal of schooling that they believe must be less about individual teacher leadership and more about a system of leading teachers.