Mastery CS-Hardy Williams

Located at 5400 Warrington Street in Philadelphia, Pennsylvania, Mastery CS-Hardy Williams operates as an active, single-school independent charter district serving families within a dynamic, large city setting. Providing a continuous K–12 educational pathway, the district offers comprehensive academic programs spanning from Kindergarten through 12th grade, establishing a consistent environment for students from their early childhood years through high school graduation. Designed to serve as its own local educational agency for federal programs, the district maintains an accessible presence for prospective families, local residents, and educational researchers, reachable by phone at (215) 724-2343 or online at masterycharter.org.

During the 2024–2025 academic year, the district educates a student body of 1,253 children and young adults, maintaining a well-balanced enrollment of 636 female and 617 male students. The student population represents a deeply rooted urban community, predominantly composed of Black students alongside Hispanic, multiracial, Asian, American Indian, and Pacific Islander learners. To support learning and development across elementary, middle, and high school grade levels, Mastery CS-Hardy Williams employs a dedicated workforce totaling more than 255 full-time equivalent (FTE) staff members. This team features over 132 full-time equivalent teachers, 15 instructional aides, and nearly 108 support personnel, ensuring students benefit from a low student-to-teacher ratio and a robust network of instructional and wraparound support services.