SA
Elementary Schools

Mastery CS John Wister Element

Mastery CS John Wister Elementary · Philadelphia County

2/10
#1343
Rank 1343 out of 1,545
Top 87%
English Language Arts2/10 · #1336 · 14th percentile
Mathematics2/10 · #1301 · 16th percentile
Science1/10 · #1304 · 8th percentile

English Language Arts

Math Trend

Science Trend

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School Overview

Mastery Charter's John Wister Elementary serves the Germantown neighborhood of Philadelphia, a historically rich area that's seen a real mix of community investment and everyday urban challenges. The school's structured, mission-driven approach — typical of the Mastery network — may appeal to families looking for consistency and clear academic expectations in a part of the city where school options vary widely. While the school's test scores currently sit below state averages across English, math, and science, families drawn to a charter environment with a defined culture and a commitment to improvement may find it worth a closer look.

Student Demographics

223 students tested · 2024-25 school year

Ethnicity

African American
203 (91%)
Hispanic
10 (4%)
Multiple Races
8 (4%)
Other
2 (1%)

Key Indicators

English Learners3 (1%)
Socioeconomically Disadvantaged222 (100%)
Students with Disabilities58 (26%)

Staff & Teachers(2024-25)

512
Enrollment
30
Teachers (FTE)
17.1:1
Student-Staff Ratio