The staff development teacher facilitates the evolution of a school-based professional learning community focused on improving teaching and learning by being a catalyst for teacher change and reflection. These teacher leaders needed the knowledge and skills to transform individual school staffs into professional learning communities focused on student learning, to coach and coax colleagues into continuous learning, and to help coordinate a school's professional development activities to align with and support both school and district needs. The 13-member team of staff development specialists would become schooled in adult learning theory and practice, engage in continuous improvement through research, attend conferences, reflect on their own practice, and learn from consultants how to train and coach the trainers. This article describes Montgomery County's Staff Development Teacher Program which focuses on three reinforcing components: training, coaching, and professional community.