Christopher Ziemba serves as a Regional Schools Officer for Mastery Schools. Before serving in the role, Ziemba was the proud principal of Lenfest Campus for nine years. Under his leadership, Lenfest showcased double-digit PSSA and Keystone proficiency growth in all content areas since the 202-2021 school year. Prior to leading the Lenfest Campus community, he was a case manager and an assistant principal at Mastery’s Pickett Campus. Before joining Mastery, he served in the U.S. Peace Corps in Kingston, Jamaica, and became a special education teacher in the Bronx. Ziemba has a bachelor’s degree from the University of Vermont and a master’s degree from Columbia University Teacher’s College. He earned his principal certification through the University of Pennsylvania’s Graduate School of Education in 2010.