Mastery CS-Clymer Elementary

Set in Philadelphia, Pennsylvania, Mastery CS-Clymer Elementary is an average-sized elementary-level community, part of Mastery CS-Clymer Elementary. It works with 419 students across grades K through 6.

Mastery CS-Clymer Elementary sits inside Mastery CS-Clymer Elementary, the local public-school operator responsible for the campus.

On the student-mix side, Mastery CS-Clymer Elementary logs that nearly all students (81%) are Black. The remainder looks like 14% Hispanic, 3% multiracial. That is visibly more Black than the county at large, where the share is closer to 39%.

Looking at school resources, Staff filings list 31 full-time-equivalent teachers, which works out to roughly 13.5:1 students per teacher. The state averages about 13.1:1, putting this campus right in line with peers. Around 99% of the student body qualifies for free or reduced-price meals, often used as a Title I proxy.

Adjusting for the school's free-and-reduced-lunch share, Mastery CS-Clymer Elementary sits in the middle band of the BeatsExpectations distribution. Schools with this campus's student mix typically land near 35.0%; this one delivers 18.6%.

In the surrounding community, the surrounding county (Philadelphia County) logs that median household income runs about $61,953, roughly 35% of adults have completed at least a four-year degree, and roughly 17% of residents live below the federal poverty line. In all, Philadelphia County runs 309 public schools (combined enrollment of about 182,005 students), of which Mastery CS-Clymer Elementary is one.

KIPP North Philadelphia CS is the nearest neighboring public school, about 0.5 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. Among the 7 schools in that immediate cluster with test data (this one included), Mastery CS-Clymer Elementary ranks 2nd on composite proficiency, above the local average of 15.1%.

Geographically, the school is in a downtown area. As a public charter, Mastery CS-Clymer Elementary runs on public funding but with greater curricular and operational autonomy than a typical district school.

Over the past 7-year window. Over the past 7-year window, the student count ticked down 28%: 582 students in 2018 compared to 419 in 2025. Black enrollment moved from 87% to 81% across the same window. Class-load math has pulled in: from 15.3:1 in 2018 to 13.5:1 in 2025.

On allk12, the page collects discussion, questions, and updates around science fair prep, picture-day reminders, and bus-route questions. Posting is open to anyone connected to the school.