%0 Journal Article %T Defining teacher leadership: A framework %A Elisa Stone %A Judith Warren Little %A Rebecca Cheung %A Thomas Reinhardt %J Phi Delta Kappan %@ 1940-6487 %D 2018 %R 10.1177/0031721718808263 %X Teacher leadership is widely thought to be critical to the success of local school improvement efforts. But it¡¯s often unclear what teacher leadership entails, precisely. Supported by district-level staff, and with assistance from a university-based research team (the authors of this article), a group of science teacher leaders created a conceptual framework to guide their work. Teacher leadership, they concluded, involves four main activities: collaborating with teachers, modeling effective instruction, providing resources, and advocating on teachers¡¯ behalf %U https://journals.sagepub.com/doi/full/10.1177/0031721718808263