Southern Lehigh High School is a four-year public high school located in Center Valley, Pennsylvania in the Lehigh Valley region of eastern Pennsylvania. It is the only high school in the Southern Lehigh School District.
Serving 1,014 students in grades 9-12, Southern Lehigh Sr. High School ranks in the top 5% of all schools in Pennsylvania for overall test scores (math proficiency is top 1%, and reading proficiency is top 1%).
The percentage of students achieving proficiency in math is 90-94% (which is higher than the Pennsylvania state average of 36%). The percentage of students achieving proficiency in reading/language arts is 84% (which is higher than the Pennsylvania state average of 55%).
The student:teacher ratio of 16:1 is higher than the Pennsylvania state level of 13:1.
Minority enrollment is 19% of the student body (majority Hispanic and Asian), which is lower than the Pennsylvania state average of 39% (majority Hispanic).
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 1,014 students
- Student:Teacher Ratio: 16:1
- Minority Enrollment: 19%
- Graduation Rate: 94% (Top 30% in PA)
- Overall Testing Rank: Top 5%
- Math Proficiency: 90-94% (Top 1%)
- Reading Proficiency: 84% (Top 5%)
- Science Proficiency: <50% (Btm 50%)
- Source: National Center for Education Statistics (NCES), PA Dept. of Education
Top Rankings
Southern Lehigh Sr. High School ranks among the top 20% of public schools in Pennsylvania for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
School Overview
Southern Lehigh Sr. High School's student population of 1,014 students has declined by 8% over five school years.
The teacher population of 62 teachers has declined by 12% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,014 students
Gender %
Total Classroom Teachers
62 teachers
Year Founded
1955
Colors
White, Blue
School Rankings
Southern Lehigh 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 Southern Lehigh Sr. High School is 0.34, 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
#37 out of 2733 schools
(Top 5%)
(Top 5%)
Math Test Scores (% Proficient)
90-94%
36%
Reading/Language Arts Test Scores (% Proficient)
84%
55%
Science Test Scores (% Proficient)
<50%
57%
Student : Teacher Ratio
16:1
13:1
American Indian
n/a
n/a
Asian
7%
5%
Hispanic
8%
15%
Black
2%
14%
White
81%
61%
Hawaiian
n/a
n/a
Two or more races
2%
5%
All Ethnic Groups
Graduation Rate
94%
87%
Eligible for Free Lunch
19%
60%
Eligible for Reduced Lunch
2%
2%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), PA Dept. of Education
School Notes
- School Mascot: The Spartan
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Southern Lehigh Sr. High School's ranking?
Southern Lehigh Sr. High School is ranked #37 out of 2,733 schools, which ranks it among the top 5% of public schools in Pennsylvania.
What schools are Southern Lehigh Sr. High School often compared to?
Southern Lehigh Sr. High Schoolis often viewed alongside schools like Parkland High School, Emmaus High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
90-94% of students have achieved math proficiency (compared to the 36% PA state average), while 84% of students have achieved reading proficiency (compared to the 55% PA state average).
What is the graduation rate of Southern Lehigh Sr. High School?
The graduation rate of Southern Lehigh Sr. High School is 94%, which is higher than the Pennsylvania state average of 87%.
How many students attend Southern Lehigh Sr. High School?
1,014 students attend Southern Lehigh Sr. High School.
What is the racial composition of the student body?
81% of Southern Lehigh Sr. High School students are White, 8% of students are Hispanic, 7% of students are Asian, 2% of students are Black, and 2% of students are Two or more races.
What is the student:teacher ratio of Southern Lehigh Sr. High School?
Southern Lehigh Sr. High School has a student ration of 16:1, which is higher than the Pennsylvania state average of 13:1.
What grades does Southern Lehigh Sr. High School offer ?
Southern Lehigh Sr. High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Southern Lehigh Sr. High School part of?
Southern Lehigh Sr. High School is part of Southern Lehigh School District.
School Reviews
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