Maria Cristina Lopez loved her work as a central office coordinator in mathematics, but she realized that she needed to learn more about how to coach effectively. With her supervisor’s encouragement, she “apprenticed” herself to the best coach in the district — a coordinator of social studies. It wasn’t long before the classroom teachers she worked with were benefiting from her newly gained insight and guidance. Eager to pass the torch, she shared what she had learned with other coordinators in her office, and math teachers throughout the district improved their practice as a result of the coaching they received from Lopez and her colleagues. David Graham enjoyed his work in the central office, too. Through careful deliberation, he recognized that, knowledgeable as he was