In this paper, Leading Educators and the Aspen Institute propose a roadmap to empower teachers to lead from the front of the classroom. This paper outlines key phases that system administrators will need to consider as they build teacher leadership systems that address their highest priorities. For each phase, the Aspen Institute offers a narrative description, high-impact action steps, common missteps, and discussion questions for further exploration. To clarify how system leaders can apply this paper, the opportunities for teacher leadership as well as its challenges, are examined and trends from organizations that have been working to implement effective teacher leadership are analyzed. Highlighted are current innovations, from emerging pilots to mature programs. These profiles--which include initiatives at the school, district, charter management organization, and state levels--focus on teacher leadership as a means for improving instructional capacity, school structure, and student culture. The approaches vary: an urban school district built a career ladder to facilitate professional growth and retention; a charter network uses teacher leadership to create and sustain aspirational student and staff cultures; a state education agency relies on teacher leaders to improve implementation of the Common Core State Standards. These efforts share an underlying conviction of the need to leverage the talents of our best teachers for all stake holders. Appended are: (1) Teacher Leadership Sounds Valuable But--Questions and Responses; (2) Steps for Teacher Leadership that Works; and (3) Additional Resources. [This paper was written with the writing and editing contributions of Walter Stern, Chong-Hao Fu, Maria Bourgeois, and Steph Bates.]