Public charter school
Mastery CS-Hardy Williams
Illustrative campus background
- Students
- 1,253
- Grades
- K–12
- Students per teacher
- 19.0
- Free or reduced-price lunch
- 95%
Mastery CS-Hardy Williams school details
- Address
- 5400 Warrington Street, Philadelphia, PA 19143
- Phone
- (215) 724-2343
- District or network
- Mastery CS-Hardy Williams
- Format
- In person
- Community
- Large city
- School lunch program
- Not participating in the National School Lunch Program
- Status (2024–25)
- Open
- NCES school ID
- 420006200504
Source: NCES Common Core of Data, 2024–25 school year, accessed 2026-09-14. Students per teacher is not class size. Details can change; confirm enrollment, meals and admissions directly with the school. How this data works.
Frequently asked questions about Mastery CS-Hardy Williams
Is Mastery CS-Hardy Williams a public charter school?
Yes. Mastery CS-Hardy Williams is listed as an open public charter school in the NCES Common Core of Data for the 2024–25 school year.
What grades does Mastery CS-Hardy Williams serve?
Mastery CS-Hardy Williams reports serving grades K–12.
How many students attend Mastery CS-Hardy Williams?
Mastery CS-Hardy Williams reported enrollment of 1,253 students for 2024–25. Enrollment can change, so confirm current figures with the school.
Where is Mastery CS-Hardy Williams located?
Mastery CS-Hardy Williams is located at 5400 Warrington Street, Philadelphia, PA 19143.
How can I compare Mastery CS-Hardy Williams with nearby charter schools?
Review the reported grades, enrollment, students per teacher, and format on this page, then use the nearby-school and Philadelphia links to compare other public charter schools. Confirm current programs and admissions directly with each school.
More charter schools in Philadelphia and Pennsylvania.