This List of William Penn Charter School people catalogs notable alumni of William Penn Charter School, a private school in Philadelphia, Pennsylvania. * Chris Albright, OPC ’97, professional soccer player * Rubén Amaro, Jr., OPC '83, baseball player, general manager Philadelphia Phillies, and coach Boston Red Sox and New York Mets * Steven Balbus, OPC '71, Savilian Professor of Astronomy, University of Oxford * Donald Barnhouse, OPC '39, American Christian preacher, pastor, radio pioneer * David Berkoff, OPC ’84, Olympic medalist in swimming * Raynal Bolling, OPC '96 (1896), first high-ranking U.S. officer to be killed in combat in World War I * Henry Joel Cadbury, OPC '99 (1899), Quaker scholar, teacher, Harvard Divinity chair 1934–54 * Bobby Convey, '98 (did not graduate), profe