Four years ago, a group of teachers lingered after a district meeting, sharing a conversation about encouraging social responsibility in the school district of Tenafly, New Jersey. That conversation led to the eventual formation of a teacher study group, a grassroots professional learning community that has impacted its members and the school district. Teachers find they are energized when they participate in the teacher study group focused on social responsibility. The group members' experiences offer some lessons about organic professional development and the role of teacher leaders within and beyond traditional district roles.