This document discusses teacher leadership. It defines teacher leadership as the process by which teachers influence colleagues, principals, and other school community members to improve teaching practices and increase student achievement and learning. Teacher leaders lead both within and beyond the classroom, identify with a community of teachers, influence others, and take responsibility for leadership outcomes. Developing teacher leadership can provide benefits like improved student outcomes, building teacher capacity and skills, and sustaining school improvement efforts. However, barriers like top-down school structures and lack of trust between staff can hinder developing teacher leadership.