Louis E. Dieruff High School, typically referred to as Dieruff High School, is a large, urban public high school in Allentown, Pennsylvania. It is located at 815 North Irving Street in Allentown.
Serving 1,857 students in grades 9-12, Louis E Dieruff 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 16% (which is lower than the Pennsylvania state average of 38%). The percentage of students achieving proficiency in reading/language arts is 35% (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 91% of the student body (majority Hispanic), which is higher than the Pennsylvania state average of 39% (majority Hispanic).
Quick Facts (2025-26)
- Grades: 9-12
- Enrollment: 1,857 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 91%
- Graduation Rate: 82% (Btm 50% in PA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 16% (Btm 50%)
- Reading Proficiency: 35% (Btm 50%)
- Science Proficiency: 5% (Btm 50%)
- Source: National Center for Education Statistics (NCES), PA Dept. of Education
School Overview
Louis E Dieruff High School's student population of 1,857 students has stayed relatively flat over five school years.
The teacher population of 109 teachers has grown by 9% over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
1,857 students
Gender %
Total Classroom Teachers
109 teachers
Year Founded
1959
School Calendar
Last Day of School
Mon. May 25, 2026
School Mascot
Alaskan Husky
School Rankings
Louis E Dieruff 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 Louis E Dieruff High School is 0.45, 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
#2308 out of 2733 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
16%
38%
Reading/Language Arts Test Scores (% Proficient)
35%
55%
Science Test Scores (% Proficient)
5%
57%
Student-Teacher Ratio
17:1
13:1
American Indian
n/a
n/a
Asian
1%
5%
Hispanic
73%
15%
Black
12%
14%
White
9%
61%
Hawaiian
n/a
n/a
Two or more races
5%
5%
All Ethnic Groups
Graduation Rate
82%
87%
Eligible for Free Lunch
100%
60%
Eligible for Reduced Lunch (15-16)
7%
3%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), PA Dept. of Education
School Notes
- School Mascot: Alaskan Husky
Profile last updated: 02/09/2025
Frequently Asked Questions
What is Louis E Dieruff High School's ranking?
Louis E Dieruff High School is ranked #2308 out of 2,733 schools, which ranks it among the bottom 50% of public schools in Pennsylvania.
What schools are Louis E Dieruff High School often compared to?
Louis E Dieruff High Schoolis often viewed alongside schools like William Allen High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
16% of students have achieved math proficiency (compared to the 38% PA state average), while 35% of students have achieved reading proficiency (compared to the 55% PA state average).
What is the graduation rate of Louis E Dieruff High School?
The graduation rate of Louis E Dieruff High School is 82%, which is lower than the Pennsylvania state average of 87%.
How many students attend Louis E Dieruff High School?
1,857 students attend Louis E Dieruff High School.
What is the racial composition of the student body?
73% of Louis E Dieruff High School students are Hispanic, 12% of students are Black, 9% of students are White, 5% of students are Two or more races, and 1% of students are Asian.
What is the student-teacher ratio of Louis E Dieruff High School?
Louis E Dieruff High School has a student ration of 17:1, which is higher than the Pennsylvania state average of 13:1.
What grades does Louis E Dieruff High School offer ?
Louis E Dieruff High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Louis E Dieruff High School part of?
Louis E Dieruff High School is part of Allentown City School District.
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