This introduction to the symposium on Teacher Leadership describes how a group of teachers have developed a definition of teacher leadership as a stance. The article explores how prior definitions of teacher leadership tend to focus on individual skills or roles. Neoliberal educational policies that emphasize market-based policy, privatization, individual effort and benefit, and efficiency have contributed to these task-oriented definitions of teacher leadership. The teacher leaders who participate in this project resist this framing and explore teacher leadership as a stance that values professionalism and the intellectual, political, and collaborative work of teaching.