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What do you wish you knew before starting at Louis E Dieruff HS?
Community prompt from u/allk12. Replies below.
Enrollment
1,914
High
DISTRICT 1,801 · STATE 738
SCHOOL COMMUNITY·ALLENTOWN CITY SD·NCES 420228002795
Louis E Dieruff High School
815 N Irving St, Allentown, PA 18109 · (484) 765-5501 · Lehigh County
GRADES 09–12HIGH12-CITYTITLE IREGULAR SCHOOL1,914 STUDENTS
C-
allk12 Grade
Scored higher than 16% of Pennsylvania public high schools
- DTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Pennsylvania public high schools
Student : Teacher
16.6:1
115 FTE teachers
DISTRICT 17.6:1 · STATE 12.8:1
Free / Reduced Lunch
98%
1,885 students
DISTRICT 102% · 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, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 502 | 26% |
| Grade 10 | 464 | 24% |
| Grade 11 | 490 | 26% |
| Grade 12 | 458 | 24% |
Student demographics
43%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 43% · STATE 59% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
PSSA + Keystone 2024-25 . % Proficient or AdvancedEnglish Language Arts
31.7%
PA avg 51.1% . -18.3pp since 2023
Math
13.1%
PA avg 43.0% . -6.1pp since 2023
What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 32 of every 100 students at this school read and write at grade level and about 13 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 18 points since 2023, while math scores are down about 6 points.
PSSA + Keystone results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 31.7% | 13.1% |
| 2023-24 | 50.0% | 19.2% |
% Proficient or Advanced, all students and all tested grades.
Source: PSSA + Keystone. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
24.8%
composite math + reading, all grades
Predicted
35.4%
based on PA schools with similar FRL share
Beats by
-10.6pp
below demographic expectation
What this means: About 25% of students here test proficient in math and reading, compared with the roughly 35% 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 →
Schools most like Louis E Dieruff High School
Louis E Dieruff High School's state test result (24.8% proficient) is higher than 3 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Louis E Dieruff High School this school | 1,914 | 98.5% | 24.8% |
| William Allen High School Allentown | 3,074 | 99.1% | 21.3% |
| Hazleton Area High School Hazle Township | 4,071 | 95.4% | 35.1% |
| McCaskey Campus Lancaster | 2,600 | 89.0% | 35.1% |
| Edison HS/Fareira Skills Philadelphia | 983 | 90.2% | 14.9% |
| Reading SHS Reading | 4,879 | 98.3% | 20.7% |
Matched among Pennsylvania high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Louis E Dieruff High School ranks
Among high schools| Measure | This school | In Pennsylvania | In Lehigh County |
|---|---|---|---|
| State test proficiency ranked highest first | 24.8% | #502 of 576 | #8 of 11 |
| Math proficiency ranked highest first | 13.1% | #538 of 626 ▼ 38 | #8 of 11 no change |
| Reading proficiency ranked highest first | 31.7% | #554 of 626 ▼ 97 | #10 of 11 ▼ 2 |
| Enrollment ranked largest first | 1,914 | #41 of 713 | #4 of 12 |
| Students per teacher ranked fewest first | 16.6:1 | #506 of 601 | #9 of 11 |
| Diversity index ranked most diverse first | 43.1% | #199 of 604 | #5 of 11 |
| Free and reduced lunch ranked highest share first | 98.5% | #167 of 619 | #4 of 11 |
| Enrollment change since 2017-18 ranked fastest growth first | +4.1% | #152 of 221 | #3 of 7 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
1,914
+40 (+2%) vs 2020
+46% since 1990-91, when it was 1,313
Student : Teacher
16.6:1
was 18.7:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 1,914 | 115 | 16.6:1 | 98% (1,885) |
| 2023-24 | 1,857 | 108.8 | 17.1:1 | N/A |
| 2022-23 | 1,915 | 106.5 | 18.0:1 | 89% (1,702) |
| 2020-21 | 1,874 | 100 | 18.7:1 | 87% (1,634) |
| 2017-18 | 1,839 | 96 | 19.2:1 | 82% (1,515) |
| 2015-16 | 1,764 | 91 | 19.4:1 | 68% (1,191) |
| 2010-11 | 1,844 | 121 | 15.2:1 | 85% (1,564) |
| 2000-01 | 1,741 | 75 | 23.2:1 | 74% (1,286) |
| 1990-91 | 1,313 | 85 | 15.4:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Louis E Dieruff High School.
Since 2017-18: students up 4% (1,839 to 1,914); teachers up 20% (96 to 115).
About Louis E Dieruff High School
Louis E Dieruff High School, a high-enrollment high school, is located in Allentown, Pennsylvania. The school covers grades 9 through 12 and reported 1,914 students in 2024-25. That puts enrollment 159% bigger than the 738-student average for high schools in Pennsylvania.
The district, Allentown City SD, has 16,674 students enrolled across 23 schools.
The student body at Louis E Dieruff High School is 74% Hispanic. Other reported shares: 11% Black, 9% White, and 5% multiracial. Lehigh County's residents are about 28% Hispanic, 46 points below the school's share. A diversity index of 43% means there is a 43% chance two randomly chosen students at Louis E Dieruff High School are from different groups.
The student-to-teacher ratio is 16.6:1. The school has 115 full-time-equivalent teachers. The school's 16.6:1 compares with an average of 12.8:1 for high schools in Pennsylvania. Federal data show 98% of students (1,885) are eligible for free or reduced-price lunch. The 70% average for public schools in Lehigh County is 28 points lower.
Among Pennsylvania public high schools, Louis E Dieruff High School outscored 16%, which works out to a C- on the allk12 Grade.
On the allk12 BeatsExpectations measure, Louis E Dieruff High School is 10.6 points below the average proficiency rate across its state test results predicted for its free or reduced-price lunch share: 24.8% actual, 35.4% predicted. That is outside both the top and bottom 10% in Pennsylvania.
For the population of Lehigh County, median household income comes to about $80,079, roughly 34% of adults have a four-year degree or more, and the share of residents below the poverty line is 8%. Lehigh County counts 83 public schools with about 56,984 students.
Of the public schools around it, Louis E Dieruff High School is closest to Lincoln Leadership Academy CS, about 0.4 miles away. The count of other public schools within five miles is at least 8. On average proficiency, Louis E Dieruff High School is 4th of 8 nearby schools with test data.
The school's setting, by NCES definition, is City: Mid-size: inside a principal city with a population between 100,000 and 250,000.
From 2020-21 to 2024-25, enrollment held near 1,914, starting from 1,874. Its ratio of students to teachers was 18.7:1 in 2020-21, and 16.6:1 in 2024-25.
People who know Louis E Dieruff High School can post here about open houses, carpools, and field trips. Teachers and staff are welcome to share updates too.
Lehigh County at a glance
View full county profilePopulation
378,792
Census ACS
Median income
$80,079
Household, ACS
Bachelor's+
34%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
83
56,984 students
Quick facts
Related schools
Other schools in Allentown City SD
- William Allen High SchoolHigh · 3,074 students
- South Mountain Middle SchoolMiddle · 972 students
- Francis D Raub Middle SchoolMiddle · 876 students
- Brigadier General Anna Mae Hays Elementary SchoolElementary · 807 students
- Trexler Middle SchoolMiddle · 771 students
- Harrison-Morton Middle SchoolMiddle · 704 students
Other schools in Allentown
- Parkland High SchoolHigh · 3,279 students
- William Allen High SchoolHigh · 3,074 students
- Executive Education Academy CSCombined · 1,497 students
- Springhouse Middle SchoolMiddle · 1,329 students
- Lincoln Leadership Academy CSCombined · 973 students
- South Mountain Middle SchoolMiddle · 972 students
Nearby schools
- Lincoln Leadership Academy CS0.4 mi · 973
- Ritter Elementary School0.4 mi · 463
- Executive Education Academy CS0.6 mi · 1,497
- Sonia Sotomayor Dual Lang Immersion Academy0.9 mi · 112
- Mosser Elementary School0.9 mi · 551
- Sheridan Elementary School1.3 mi · 591
Frequently asked questions
About Louis E Dieruff High SchoolHow large is Louis E Dieruff High School?
Louis E Dieruff High School enrolls approximately 1,914 students in grades 09-12.
What age range does Louis E Dieruff High School serve?
Louis E Dieruff High School serves students from grade 09 through grade 12.
What is the student-teacher ratio at Louis E Dieruff High School?
The student-to-teacher ratio at Louis E Dieruff High School is approximately 16.6:1 (115 FTE teachers).
What is the student diversity at Louis E Dieruff High School?
Student demographics at Louis E Dieruff High School are roughly 9% White, 74% Hispanic, 11% Black, 1% Asian, 5% Two or more.
What district is Louis E Dieruff High School in?
Louis E Dieruff High School is part of Allentown City SD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.