Philadelphia Free School
Private · Grades K–12 · 44 students
Mastery CS-Hardy Williams
5400 Warrington Street, Philadelphia, PA 19143
Grades
K–12
Other
Students
1,253
Enrolled 2024–25
Students per teacher
18.9 : 1
Full-time teachers
District
Mastery CS-Hardy Williams
Philadelphia County
Schola Grade C · Average
Letter grade (A–F) · compared with 52 Pennsylvania K–8, K–12 and other combined schools · How we grade
Percentiles compare this school with other Pennsylvania K–8, K–12 and other combined schools; the line marks the middle. Data: test scores 2021–22, graduation and absenteeism 2022–23 (U.S. Department of Education, EDFacts); coursework 2023–24 (Civil Rights Data Collection); staffing 2024–25 (NCES).
About Mastery CS-Hardy Williams
Mastery CS-Hardy Williams is a charter school in Philadelphia, Pennsylvania, serving grades K–12. The school is located in a large city in Philadelphia County.
In the 2024–25 school year, 1,253 students were enrolled, with about 18.9 students for every full-time teacher. As a charter school, it is publicly funded and tuition-free, but operates independently of the local district under a charter from Philadelphia City SD. Its Schola Grade is C (average), compared with 52 Pennsylvania K–8, K–12 and other combined schools.
Grades & enrollment
Students per grade, 2024–25Grades K–12
Location & nearby schools
School details
- Type
- Charter School · What this means
- Level
- Other
- Grades offered
- K–12
- Enrollment (2024–25)
- 1,253 students
- Students per teacher
- 18.9 to 1
- AP courses offered
- 2
- Charter school
- Yes
- Charter authorizer
- Philadelphia City SD
- Magnet school
- No
- Locale
- City — Large
- School district
- Mastery CS-Hardy Williams
- County
- Philadelphia County
- NCES school ID
- 420006200504
Schools near Mastery CS-Hardy Williams
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Universal Institute CS
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School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.