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SCHOOL COMMUNITY·MASTERY CHS-LENFEST CAMPUS·NCES 420008400578

Mastery CHS-Lenfest Campus

35 S. 4th Street, Philadelphia, PA 19106 · (215) 922-1902 · Philadelphia County
GRADES 07–12HIGH11-CITYCHARTERTITLE IREGULAR SCHOOL660 STUDENTS
Enrollment
660
High
STATE 738
Student : Teacher
16.5:1
40 FTE teachers
STATE 12.8:1
Free / Reduced Lunch
96%
634 students
STATE 75%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Grade 7
112
Grade 8
111
Grade 9
116
Grade 10
120
Grade 11
106
Grade 12
95
Student demographics
White
41%
STATE 60%
Hispanic
12018%
STATE 16%
Black
50977%
STATE 14%
Asian
30%
STATE 5%
Two+
233%
STATE 5%
Pacific Islander
10%
STATE 0%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
33951%
Female
32149%

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Test scores

PSSA + Keystone 2024-25 . % Proficient or Advanced
English Language Arts
38.1%
PA avg 51.1% . -10.1pp since 2023
Math
17.6%
PA avg 43.0% . -2.2pp since 2023
Source: PSSA + Keystone. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
31.2%
composite math + reading, all grades
Predicted
36.4%
based on PA schools with similar FRL share
Beats by
-5.2pp
below demographic expectation
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
660
+73 (+12%) vs 2017
Student : Teacher
16.5:1
was 15.7:1
% White
1%
was 4%
% Hispanic
18%
was 10%
% Black
77%
was 81%
% Asian
0%
was 1%
Source: NCES Common Core of Data

About Mastery CHS-Lenfest Campus

Set in Philadelphia, Pennsylvania, Mastery CHS-Lenfest Campus is a middle-of-the-pack 9-12 campus, overseen by Mastery CHS-Lenfest Campus. It teaches 660 students across grades 7 through 12.

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

On demographics, Mastery CHS-Lenfest Campus reports that 77% of the student body identifies as Black. Beyond that, the school logs 18% Hispanic, 3% multiracial. By comparison, Philadelphia County as a whole is about 39% Black, so the school skews noticeably more Black than its surroundings.

On the income-and-resources front, Mastery CHS-Lenfest Campus reports 40 full-time-equivalent teachers, putting the student-to-teacher ratio at about 16.5:1. The state averages around 12.8:1, so this campus is higher than the state norm typical. Around 96% of the student body qualifies for free or reduced-price meals, a commonly cited indicator of low-income enrollment.

On a demographically-adjusted basis, Mastery CHS-Lenfest Campus performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 36.4%, the actual is 31.2%, a residual of -5.2 points.

In the surrounding community, Philadelphia County reports that the typical household earns roughly $61,953 per year, 35% of adults hold a bachelor's degree or higher, 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 CHS-Lenfest Campus is one.

Nearest neighbor: National Constitution Center HS, around 0.3 miles off. Counting just inside five miles, 8 other public schools cluster around Mastery CHS-Lenfest Campus. Ranking that nearby cluster on reported proficiency puts Mastery CHS-Lenfest Campus at 8th of 9; the average score across the group is 59.7%.

The school occupies a downtown site. As a public charter, Mastery CHS-Lenfest Campus runs on public funding but with greater curricular and operational autonomy than a typical district school.

Over the past 7-year window. Looking back 7 years, enrollment at Mastery CHS-Lenfest Campus has increased 12%, going from 587 students in 2018 to 660 in 2025. Over the same period, the Hispanic share ticked up from 10% to 18%.

On the community side, recent activity here tends to focus on science fair prep, picture-day reminders, and bus-route questions. Contributors range from current parents to recent graduates and teachers.

Philadelphia County at a glance

View full county profile
Population
1,579,706
Census ACS
Median income
$61,953
Household, ACS
Bachelor's+
35%
Adults 25+
Poverty rate
17%
Below federal line
Schools in county
309
182,005 students

Quick facts

School name
Mastery CHS-Lenfest Campus
District
Mastery CHS-Lenfest Campus
Address
35 S. 4th Street, Philadelphia, PA 19106
Phone
(215) 922-1902
County
Philadelphia County
Level
High
Grade range
07–12
Total enrollment
660
Teachers (FTE)
40
Student–teacher ratio
16.5:1
Free/Reduced lunch
634 (96%)
Locale
11-City: Large
NCES ID
420008400578
Charter school
Yes
Virtual school
No

Related schools

Other schools in Philadelphia
Nearby schools

Frequently asked questions

About Mastery CHS-Lenfest Campus
How many students attend Mastery CHS-Lenfest Campus?
Mastery CHS-Lenfest Campus enrolls approximately 660 students in grades 07-12.
What age range does Mastery CHS-Lenfest Campus serve?
Mastery CHS-Lenfest Campus serves students from grade 07 through grade 12.
How many students per teacher at Mastery CHS-Lenfest Campus?
Approximately 16.5:1 students per teacher at Mastery CHS-Lenfest Campus.
How diverse is Mastery CHS-Lenfest Campus?
Mastery CHS-Lenfest Campus reports a student body of 1% White, 18% Hispanic, 77% Black, 0% Asian, 3% Two or more.
Is Mastery CHS-Lenfest Campus public or private?
Mastery CHS-Lenfest Campus is a public K-12 school operated as a charter, overseen by Mastery CHS-Lenfest Campus.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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