Simon Gratz High School Mastery Charter, formerly Simon Gratz High School is a secondary school in Philadelphia. Its name honors Simon Gratz, a member of the Philadelphia Board of Education.
Serving 1,036 students in grades 7-12, Mastery Cs-gratz Campus ranks in the bottom 50% of all schools in Pennsylvania for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 8% (which is lower than the Pennsylvania state average of 38%). The percentage of students achieving proficiency in reading/language arts is 20% (which is lower than the Pennsylvania state average of 55%).
The student-teacher ratio of 18:1 is higher than the Pennsylvania state level of 13:1.
Quick Facts (2026)
- School Type: Charter School
- Grades: 7-12
- Enrollment: 1,036 students
- Student-Teacher Ratio: 18:1
- Graduation Rate: 85-89% (Btm 50% in PA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 8% (Btm 50%)
- Reading Proficiency: 20% (Btm 50%)
- Science Proficiency: 4% (Btm 50%)
- Source: National Center for Education Statistics (NCES), PA Dept. of Education
School Overview
Mastery Cs-gratz Campus's student population of 1,036 students has declined by 22% over five school years.
The teacher population of 59 teachers has declined by 23% over five school years.
School Type
Grades Offered
Grades 7-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,036 students
Gender %
Total Classroom Teachers
59 teachers
Year Founded
1925
School Calendar
Last Day of School
Wed. Jun 17, 2026
Average Class Size
20 students
School Rankings
Mastery Cs-gratz Campus ranks within the bottom 50% of all 2,733 schools in Pennsylvania (based off of combined math and reading proficiency testing data).
The diversity score of Mastery Cs-gratz Campus is 0.25, which is less than the diversity score at state average of 0.59. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#2564 out of 2733 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
8%
38%
Reading/Language Arts Test Scores (% Proficient)
20%
55%
Science Test Scores (% Proficient)
4%
57%
Student-Teacher Ratio
18:1
13:1
American Indian
1%
n/a
Asian
1%
5%
Hispanic
10%
15%
Black
86%
14%
White
n/a
61%
Hawaiian
n/a
n/a
Two or more races
2%
5%
All Ethnic Groups
Graduation Rate
85-89%
87%
Eligible for Free Lunch
100%
60%
Eligible for Reduced Lunch (13-14)
1%
5%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), PA Dept. of Education
Frequently Asked Questions
What is Mastery Cs-gratz Campus's ranking?
Mastery Cs-gratz Campus is ranked #2564 out of 2,733 schools, which ranks it among the bottom 50% of public schools in Pennsylvania.
What percent of students have achieved state testing proficiency in math and reading?
8% of students have achieved math proficiency (compared to the 38% PA state average), while 20% of students have achieved reading proficiency (compared to the 55% PA state average).
What is the graduation rate of Mastery Cs-gratz Campus?
The graduation rate of Mastery Cs-gratz Campus is 85-89%, which is lower than the Pennsylvania state average of 87%.
How many students attend Mastery Cs-gratz Campus?
1,036 students attend Mastery Cs-gratz Campus.
What is the racial composition of the student body?
86% of Mastery Cs-gratz Campus students are Black, 10% of students are Hispanic, 2% of students are Two or more races, 1% of students are American Indian, and 1% of students are Asian.
What is the student-teacher ratio of Mastery Cs-gratz Campus?
Mastery Cs-gratz Campus has a student ration of 18:1, which is higher than the Pennsylvania state average of 13:1.
What grades does Mastery Cs-gratz Campus offer ?
Mastery Cs-gratz Campus offers enrollment in grades 7-12 (No virtual instruction).
What school district is Mastery Cs-gratz Campus part of?
Mastery Cs-gratz Campus is part of Mastery Charter School-Gratz Campus School District.
In what neighborhood is Mastery Cs-gratz Campus located?
Mastery Cs-gratz Campus is located in the North Philadelphia neighborhood of Philadelphia, PA. There are 106 other public schools located in North Philadelphia.
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