Leading Professional Learning: Building Capacity Through Teacher Leaders provides practical tools, examples, and processes for developing, implementing, and evaluating systems of job-embedded professional learning led by teacher leaders. Developed by ASCD faculty member and author Judy Carr, the course provides a necessary alternative to older “train the trainer” models of professional development. Instead, it emphasizes sustainable approaches to long-term capacity building. This deep professional learning leads to routine use of essential practices in classrooms and schools. Carr defines job-embedded professional learning and identifies approaches to needs assessment that highlight professional learning needs within a school. She provides guidance and criteria for the identification and selection of teacher leaders, including examples of learning with colleagues in a job-embedded system. The examples cover action research and other study groups, collaborative planning of lessons and assessments, and differentiated professional learning in which teachers engage with and provide feedback to one another.