School Overview
Mastery Charter School – Gratz Campus is a public charter secondary school located in the Hunting Park neighborhood of Philadelphia. Serving students in grades 7 through 12, the campus is part of the larger Mastery Charter Schools network, which is known for its "no-excuses" academic model, focus on college readiness, and intensive data-driven instruction. The school operates with a mission to ensure that all students—regardless of their academic starting point—are prepared for success in higher education and the professional workforce.

The Gratz Campus is particularly notable for its turnaround history, as it was formerly a struggling district-run high school before being transformed by Mastery in 2011. Today, the school emphasizes a structured environment, individualized learning plans, and a culture of high expectations. Beyond the core curriculum, the school integrates extracurricular activities and support services aimed at fostering student development and community engagement within the Hunting Park area.
1,160
Total Students
67.1
Full-Time Teachers
17.3
Student/Teacher Ratio
N/A
Free/Reduced Lunch
Student Demographics

Student Demographics Data Table

Student Demographics for Mastery CS-Gratz Campus
Demographic Student Count
White5
Hispanic102
Black1,020
Asian1
Two or More25
American Indian7
  • Black
    1,020 (87.9 %)
  • Hispanic
    102 (8.8 %)
  • Two or More
    25 (2.2 %)
  • American Indian
    7 (0.6 %)
  • White
    5 (0.4 %)
  • Asian
    1 (0.1 %)
School Location
School Details
Status: Open
School Level: High School
School Type: Regular School
Charter Status:* Charter School
Virtual Instruction: Supplemental Virtual
Shared Time Status: No
District: Mastery CS-Gratz Campus
Phone: (215)227-4408
Website: http://www.masterycharter.org/
Grade Range: 7th - 12th
Total Students: 1,160
Full-Time Teachers (FTE): 67.1
Pupil/Teacher Ratio: 17.3
NSLP Participation:1 No
Qualified Free Lunch: 0
Qualified Reduced Lunch: 0
Grades Taught
Grade 7 120
Grade 8 150
Grade 9 202
Grade 10 244
Grade 11 228
Grade 12 216

Grades Taught Data Table

Grades Taught and Student Counts for Mastery CS-Gratz Campus
Grade Student Count
Grade 7120
Grade 8150
Grade 9202
Grade 10244
Grade 11228
Grade 12216
Gender Ratio

Student Gender Ratio Data Table

Student Gender Ratio for Mastery CS-Gratz Campus
Gender Student Count Percentage
Female52845.5%
Male63254.5%
Nearby High Schools (Within 10 Miles)