Radnor High School is a public high school in Radnor, Pennsylvania. Of all high schools in Pennsylvania, Radnor is ranked 3rd by U.S. News & World Report, and 1st by the Pennsylvania Department of Education.
Serving 1,146 students in grades 9-12, Radnor Sr. High School ranks in the top 5% of all schools in Pennsylvania for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 72% (which is higher than the Pennsylvania state average of 38%). The percentage of students achieving proficiency in reading/language arts is 95% (which is higher than the Pennsylvania state average of 55%).
The student-teacher ratio of 12:1 is lower than the Pennsylvania state level of 13:1.
Minority enrollment is 31% of the student body (majority Asian), which is lower than the Pennsylvania state average of 40% (majority Hispanic and Black).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 1,146 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 31%
- Graduation Rate: 97% (Top 5% in PA)
- Overall Testing Rank: Top 5%
- Math Proficiency: 72% (Top 10%)
- Reading Proficiency: 95% (Top 1%)
- Science Proficiency: 50-59% (Btm 50%)
- Source: National Center for Education Statistics (NCES), PA Dept. of Education
Top Rankings
Radnor Sr. High School ranks among the top 20% of public schools in Pennsylvania for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Graduation Rate
School Overview
Radnor Sr. High School's student population of 1,146 students has stayed relatively flat over five school years.
The teacher population of 92 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,146 students
Total Classroom Teachers
92 teachers
Year Founded
1905
Campus Size
50 acres
School Motto
Inspire, Achieve, Excel
School Rankings
Radnor Sr. High School ranks within the top 5% of all 2,733 schools in Pennsylvania (based off of combined math and reading proficiency testing data).
The diversity score of Radnor Sr. High School is 0.50, which is less 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
#78 out of 2733 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
72%
38%
Reading/Language Arts Test Scores (% Proficient)
95%
55%
Science Test Scores (% Proficient)
50-59%
57%
Student-Teacher Ratio
12:1
13:1
American Indian
n/a
n/a
Asian
15%
5%
Hispanic
6%
16%
Black
6%
14%
White
69%
60%
Hawaiian
n/a
n/a
Two or more races
4%
5%
All Ethnic Groups
Graduation Rate
97%
87%
Eligible for Free Lunch
15%
59%
Eligible for Reduced Lunch
1%
2%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), PA Dept. of Education
School Notes
- School Mascot: Raptors
Frequently Asked Questions
What is Radnor Sr. High School's ranking?
Radnor Sr. High School is ranked #78 out of 2,733 schools, which ranks it among the top 5% of public schools in Pennsylvania.
What percent of students have achieved state testing proficiency in math and reading?
72% of students have achieved math proficiency (compared to the 38% PA state average), while 95% of students have achieved reading proficiency (compared to the 55% PA state average).
What is the graduation rate of Radnor Sr. High School?
The graduation rate of Radnor Sr. High School is 97%, which is higher than the Pennsylvania state average of 87%.
How many students attend Radnor Sr. High School?
1,146 students attend Radnor Sr. High School.
What is the racial composition of the student body?
69% of Radnor Sr. High School students are White, 15% of students are Asian, 6% of students are Hispanic, 6% of students are Black, and 4% of students are Two or more races.
What is the student-teacher ratio of Radnor Sr. High School?
Radnor Sr. High School has a student ration of 12:1, which is lower than the Pennsylvania state average of 13:1.
What grades does Radnor Sr. High School offer ?
Radnor Sr. High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Radnor Sr. High School part of?
Radnor Sr. High School is part of Radnor Township School District.
School Reviews
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