Mastery CS-Gratz Campus

Set in Philadelphia, Pennsylvania, Mastery CS-Gratz Campus is a mid-sized high school, run under Mastery CS-Gratz Campus. It educates 1,048 students across grades 7 through 12. By comparison, Pennsylvania's public schools average about 738 students each, so Mastery CS-Gratz Campus sits 42% larger than that benchmark.

Operationally, Mastery CS-Gratz Campus answers to Mastery CS-Gratz Campus, which sets policy, hires staff, and reports enrollment to the state.

In terms of who attends, Mastery CS-Gratz Campus reports that nearly all students (85%) are Black. The remainder breaks down as 12% Hispanic, 2% multiracial. The wider county runs roughly 39% Black, putting the school's mix visibly more Black than the area baseline.

On the income-and-resources front, On paper, Mastery CS-Gratz Campus has 70 full-time-equivalent teachers, translating to a class-load average of around 15.0:1. Statewide, the average ratio sits near 12.8:1, putting Mastery CS-Gratz Campus higher than the state norm the norm. Around 99% of the student body qualifies for free or reduced-price meals, a commonly cited indicator of low-income enrollment.

With demographic context factored in, Mastery CS-Gratz Campus tracks the demographic baseline. The model predicts 35.2% given the school's FRL share; actual proficiency is 21.1%.

In the broader community, the surrounding county (Philadelphia County) records that median household earnings sit near $61,953, 35% of adults hold a bachelor's degree or higher, and census figures put the poverty rate at about 17%. Across Philadelphia County's 309 public schools (combined enrollment of about 182,005 students), Mastery CS-Gratz Campus is one campus in the mix.

Nearest neighbor: Mastery Prep Elementary CS, around 0.0 miles off. Within five miles, there are 8 other public schools. On composite proficiency, Mastery CS-Gratz Campus comes 5th of 8 in the immediate cluster, higher than the nearby-schools average of 21.1%.

Geographically, the school is in a downtown area. Mastery CS-Gratz Campus operates as a public charter school, meaning it is publicly funded but governed independently of the surrounding district's traditional schools.

Over the past 7-year window. Looking back 7 years, enrollment at Mastery CS-Gratz Campus has decreased 29%, going from 1,474 students in 2018 to 1,048 in 2025. The Black share of enrollment edged down from 92% to 85% over that span. The student-to-teacher ratio pulled in from 17.4:1 in 2018 to 15.0:1 today.

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