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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

What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 38 of every 100 students at this school read and write at grade level and about 18 of 100 do math at grade level. Across all Pennsylvania schools, those numbers are about 51 and 43. Reading and writing scores are down about 10 points since 2023, while math scores are down about 2 points.

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

What this means: About 31% of students here test proficient in math and reading, compared with the roughly 36% typical for Pennsylvania schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Pennsylvania's top nor bottom 10%.

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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