Quick Facts (2026)
- School Type: Charter School
- Grades: Kindergarten-12
- Enrollment: 1,253 students
- Student-Teacher Ratio: 19:1
- Graduation Rate: ≥95% (Top 10% in PA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 14% (Btm 50%)
- Reading Proficiency: 29% (Btm 50%)
- Science Proficiency: 27% (Btm 50%)
- Source: National Center for Education Statistics (NCES), PA Dept. of Education
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Mastery Cs-hardy Williams ranks among the top 20% of public schools in Pennsylvania for:
School Overview
(No virtual instruction)
School Rankings
(Bottom 50%)
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