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What's the most underrated thing about Pittsburgh Allderdice HS that outsiders don't know?
Community prompt from u/allk12. Replies below.
Enrollment
1,386
High
DISTRICT 691 · STATE 738
SCHOOL COMMUNITY·PITTSBURGH SD·NCES 421917000409
Pittsburgh Allderdice High School
2409 Shady Ave, Pittsburgh, PA 15217 · (412) 529-4800 · Allegheny County
GRADES 09–12HIGH11-CITYTITLE IREGULAR SCHOOL1,386 STUDENTS
B+
allk12 Grade
Scored higher than 69% of Pennsylvania public high schools
- B-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats 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
15.8:1
88 FTE teachers
DISTRICT 12.3:1 · STATE 12.8:1
Free / Reduced Lunch
93%
1,294 students
DISTRICT 99% · 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 | 391 | 28% |
| Grade 10 | 326 | 24% |
| Grade 11 | 347 | 25% |
| Grade 12 | 322 | 23% |
Student demographics
66%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 66% · 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
63.8%
PA avg 51.1% . +0.3pp since 2023
Math
46.6%
PA avg 43.0% . +7.5pp since 2023
What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 64 of every 100 students at this school read and write at grade level and about 47 of 100 do math at grade level. Across all Pennsylvania schools, those numbers are about 51 and 43. Reading and writing scores have held steady since 2023, while math scores are up about 8 points.
PSSA + Keystone results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 63.8% | 46.6% |
| 2023-24 | 63.5% | 39.1% |
% 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
50.9%
composite math + reading, all grades
Predicted
37.6%
based on PA schools with similar FRL share
Beats by
+13.3pp
above demographic expectation
What this means: About 51% of students here test proficient in math and reading, compared with the roughly 38% 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 Pittsburgh Allderdice High School
Pittsburgh Allderdice High School's state test result (50.9% proficient) is higher than 3 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Pittsburgh Allderdice High School this school | 1,386 | 93.4% | 50.9% |
| Gateway SHS Monroeville | 1,152 | 98.0% | 59.1% |
| West Mifflin Area High School West Mifflin | 964 | 98.1% | 27.3% |
| Pittsburgh CAPA 6-12 Pittsburgh | 840 | 98.3% | 71.5% |
| Erie High School Erie | 2,501 | 96.6% | 8.2% |
| Valley JSHS New Kensington | 905 | 97.8% | 17.7% |
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 Pittsburgh Allderdice High School ranks
Among high schools| Measure | This school | In Pennsylvania | In Allegheny County |
|---|---|---|---|
| State test proficiency ranked highest first | 50.9% | #288 of 576 | #26 of 45 |
| Math proficiency ranked highest first | 46.6% | #229 of 626 ▲ 67 | #23 of 53 ▲ 2 |
| Reading proficiency ranked highest first | 63.8% | #255 of 626 ▲ 24 | #25 of 53 ▲ 1 |
| Enrollment ranked largest first | 1,386 | #90 of 713 | #6 of 59 |
| Students per teacher ranked fewest first | 15.8:1 | #462 of 601 | #45 of 52 |
| Diversity index ranked most diverse first | 66.4% | #43 of 604 | #5 of 52 |
| Free and reduced lunch ranked highest share first | 93.4% | #228 of 619 | #25 of 52 |
| Enrollment change since 2017-18 ranked steepest decline first | -6.5% | #249 of 373 | #20 of 29 |
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
1,386
-44 (-3%) vs 2020
-9% since 1990-91, when it was 1,526
Student : Teacher
15.8:1
was 13.5:1
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 | 1,386 | 87.5 | 15.8:1 | 93% (1,294) |
| 2023-24 | 1,294 | 95.5 | 13.6:1 | 100% (1,294) |
| 2022-23 | 1,362 | 104.5 | 13.0:1 | 100% (1,362) |
| 2020-21 | 1,430 | 106 | 13.5:1 | 100% (1,427) |
| 2017-18 | 1,483 | 103.4 | 14.3:1 | 41% (609) |
| 2015-16 | 1,434 | 88 | 16.3:1 | 52% (742) |
| 2010-11 | 1,379 | 107 | 12.9:1 | 38% (518) |
| 2000-01 | 1,567 | 102 | 15.4:1 | 21% (334) |
| 1990-91 | 1,526 | 104 | 14.7:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Pittsburgh Allderdice High School.
Since 2017-18: students down 7% (1,483 to 1,386); teachers down 15% (103.4 to 87.5).
About Pittsburgh Allderdice High School
Pittsburgh Allderdice High School is a public high school run by Pittsburgh SD in Pittsburgh, Pennsylvania. The school has 1,386 students in 2024-25 across grades 9 through 12. By comparison, high schools in Pennsylvania enroll about 738 students on average.
Pittsburgh Allderdice High School belongs to Pittsburgh SD, a district of 56 schools and 19,211 students.
White students make up 47% of enrollment at Pittsburgh Allderdice High School, the largest share of any group. The rest of enrollment is 31% Black, 8% multiracial, 8% Hispanic, and 5% Asian. Census estimates put the White share of Allegheny County's population at about 76%. On a 0 to 100 scale, the school's diversity index is 66, compared with 70 nationally.
There are 87.5 full-time-equivalent teachers at Pittsburgh Allderdice High School, giving a ratio of 15.8:1. High schools in Pennsylvania average 12.8:1, 3.1 fewer students per teacher than here. A total of 1,294 students, or 93%, are eligible for free or reduced-price lunch. On average, public schools in Allegheny County report 54%.
Pittsburgh Allderdice High School earns a B+ on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 69% of Pennsylvania public high schools.
Pittsburgh Allderdice High School sits between the top and bottom 10% of Pennsylvania schools on BeatsExpectations, with an actual average proficiency rate across its state test results of 50.9% and a predicted 37.6%.
The county, Allegheny County, is where the school is located. The median household earns about $78,548 a year, the share of adults with a bachelor's degree or higher is 46%, and about 7% of people live in poverty. Counting Pittsburgh Allderdice High School, Allegheny County has 277 public schools.
Straight-line distance to the nearest public school, Pittsburgh Colfax K-8, is about 0.3 miles. Around the school, at least 8 other public schools are within five miles. By average proficiency, Pittsburgh Allderdice High School is 4th among 7 schools close by.
Pittsburgh Allderdice High School is inside a principal city with a population of 250,000 or more, a location NCES labels City: Large.
By 2024-25, enrollment had dropped to 1,386, from 1,430 in 2020-21. By 2024-25, the school had 15.8 students per teacher, compared with 13.5 in 2020-21.
People who know Pittsburgh Allderdice High School can post here about homework, tutoring, and testing dates. Parents, students, alumni, and staff are welcome to post.
Allegheny County at a glance
View full county profilePopulation
1,238,177
Census ACS
Median income
$78,548
Household, ACS
Bachelor's+
46%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
277
141,392 students
Quick facts
Related schools
Other schools in Pittsburgh SD
- Pittsburgh Brashear High SchoolHigh · 897 students
- Pittsburgh CAPA 6-12High · 840 students
- Pittsburgh Colfax K-8Elementary · 789 students
- Pittsburgh Obama 6-12High · 678 students
- Pittsburgh Science and Technology Academy 6-12High · 618 students
- Pittsburgh WestinghouseHigh · 573 students
Other schools in Pittsburgh
- Mt Lebanon SHSHigh · 1,772 students
- Baldwin SHSHigh · 1,657 students
- North Hills High SchoolHigh · 1,443 students
- Fox Chapel Area High SchoolHigh · 1,360 students
- Upper Saint Clair High SchoolHigh · 1,269 students
- Penn Hills Elementary SchoolElementary · 1,228 students
Nearby schools
- Pittsburgh Colfax K-80.3 mi · 789
- Pittsburgh Minadeo K-50.5 mi · 296
- Pittsburgh Linden K-51.1 mi · 91
- Environmental CS at Frick Park1.3 mi · 1,073
- Pittsburgh Greenfield K-81.3 mi · 396
- Pittsburgh Sterrett 6-81.4 mi · 183
Frequently asked questions
About Pittsburgh Allderdice High SchoolHow large is Pittsburgh Allderdice High School?
Pittsburgh Allderdice High School enrolls approximately 1,386 students in grades 09-12.
What age range does Pittsburgh Allderdice High School serve?
Pittsburgh Allderdice High School serves students from grade 09 through grade 12.
How many students per teacher at Pittsburgh Allderdice High School?
Approximately 15.8:1 students per teacher at Pittsburgh Allderdice High School.
How diverse is Pittsburgh Allderdice High School?
Pittsburgh Allderdice High School reports a student body of 47% White, 8% Hispanic, 31% Black, 5% Asian, 8% Two or more.
What district is Pittsburgh Allderdice High School in?
Pittsburgh Allderdice High School is part of Pittsburgh SD.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.