Serving 4,187 students in grades 9-12, Upper Darby Sr. High School 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 10% (which is lower than the Pennsylvania state average of 38%). The percentage of students achieving proficiency in reading/language arts is 50% (which is lower than the Pennsylvania state average of 55%).
The student-teacher ratio of 17:1 is higher than the Pennsylvania state level of 13:1.
Minority enrollment is 85% of the student body (majority Black), which is higher than the Pennsylvania state average of 40% (majority Hispanic and Black).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 4,187 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 85%
- Graduation Rate: 89% (Btm 50% in PA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 10% (Btm 50%)
- Reading Proficiency: 50% (Btm 50%)
- Science Proficiency: 39% (Btm 50%)
- Attendance Zone: Upper Darby High School's attendance zone encompasses the entire district, covering approximately 8.5 square miles in Drexel Hill, PA, with typical drive times of 5-10 minutes and an average distance of 1.7 miles to the zone's edge, reaching up to 3.2 miles at its furthest point.
- Source: National Center for Education Statistics (NCES), PA Dept. of Education
School Overview
Upper Darby Sr. High School's student population of 4,187 students has grown by 8% over five school years.
The teacher population of 246 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(Supplemental Virtual)
(Supplemental Virtual)
Total Students
4,187 students
Showing 2016–2025. Full 39-year historical data available below ↓
Total Classroom Teachers
246 teachers
Showing 2016–2025. Full 39-year historical data available below ↓
Year Founded
1895
School Calendar
School Rankings
Upper Darby Sr. High School 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 Upper Darby Sr. High School is 0.67, which is more than the diversity score at state average of 0.60. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#2191 out of 2733 schools
(Bottom 50%)
(Bottom 50%)
Showing 2013–2023. Full 14-year historical data available below ↓
Math Test Scores (% Proficient)
10%
38%
Showing 2013–2023. Full 14-year historical data available below ↓
Reading/Language Arts Test Scores (% Proficient)
50%
55%
Showing 2012–2022. Full 13-year historical data available below ↓
Science Test Scores (% Proficient)
39%
57%
Student-Teacher Ratio
17:1
13:1
Showing 2016–2025. Full 39-year historical data available below ↓
Asian
14%
5%
Showing 2016–2025. Full 38-year historical data available below ↓
Hispanic
17%
16%
Showing 2016–2025. Full 35-year historical data available below ↓
Black
51%
14%
Showing 2016–2025. Full 38-year historical data available below ↓
White
15%
60%
Showing 2016–2025. Full 38-year historical data available below ↓
Two or more races
3%
5%
Showing 2016–2025. Full 11-year historical data available below ↓
All Ethnic Groups
Showing 2016–2025. Full 38-year historical data available below ↓
Graduation Rate
89%
87.5%
Showing 2014–2023. Full 13-year historical data available below ↓
Chronically Absent Students
(22-23)39.9%
23.3%
Eligible for Free Lunch
100%
59%
Showing 2016–2025. Full 23-year historical data available below ↓
Eligible for Reduced Lunch (17-18)
6%
3%
Showing 2008–2018. Full 16-year historical data available below ↓
School Statewide Testing
School District Name
Sports
Colors
Purple, Gold
Source: National Center for Education Statistics (NCES), PA Dept. of Education
Frequently Asked Questions
What is Upper Darby Sr. High School's ranking?
Upper Darby Sr. High School is ranked #2191 out of 2,733 schools, which ranks it among the bottom 50% of public schools in Pennsylvania.
What schools are Upper Darby Sr. High School often compared to?
Upper Darby Sr. High Schoolis often viewed alongside schools like Penn Wood High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
10% of students have achieved math proficiency (compared to the 38% PA state average), while 50% of students have achieved reading proficiency (compared to the 55% PA state average).
What is the graduation rate of Upper Darby Sr. High School?
The graduation rate of Upper Darby Sr. High School is 89%, which is higher than the Pennsylvania state average of 87.5%.
How many students attend Upper Darby Sr. High School?
4,187 students attend Upper Darby Sr. High School.
What is the racial composition of the student body?
51% of Upper Darby Sr. High School students are Black, 17% of students are Hispanic, 15% of students are White, 14% of students are Asian, and 3% of students are Two or more races.
What is the student-teacher ratio of Upper Darby Sr. High School?
Upper Darby Sr. High School has a student ration of 17:1, which is higher than the Pennsylvania state average of 13:1.
What grades does Upper Darby Sr. High School offer ?
Upper Darby Sr. High School offers enrollment in grades 9-12 (Supplemental Virtual).
What school district is Upper Darby Sr. High School part of?
Upper Darby Sr. High School is part of Upper Darby School District.
School Reviews
5 10/10/2025
A great place to prepare for life.
5 10/10/2025
Absolutely amazing place to prepare you for the real world. From academics to extracurriculars Upper Darby does not get enough credit.
Review Upper Darby Sr. High School. Reviews should be a few sentences in length. Please include any comments on:
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