- Enrollment
- 897
- Students per teacher
- 9.8:1
- Resource Index
- 50/100
High school (grades 9-12) · Pittsburgh, PA
Pittsburgh Allderdice Hs
Federal NCES profile for Pittsburgh Allderdice Hs, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 37/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 421917000409
👥 S:T ratio 47
🌟 Gifted program 70
🎓 Counselors 31
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Pittsburgh Allderdice Hs earns 37/100 on the Resource Investment Index, with class sizes near the Pennsylvania median. It is also one of the largest schools in Pennsylvania.
- #14 of 16
- high schools in Pittsburgh · Resource Index
- 37
- Resource Index · Typical
- 13.3:1
- students per teacher
- 100.0%
- free-lunch eligible
Pittsburgh Allderdice Hs has class sizes near the Pennsylvania median. Computed live against every Pennsylvania school reporting to NCES.
By Resource Investment Index, Pittsburgh Allderdice Hs ranks #14 of 16 high schools in Pittsburgh, PA.
School address
District: Pittsburgh Sd · Pennsylvania
NCES ID 421917000409 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-68 students YoY
Pittsburgh Allderdice Hs held near 1,294 students from 2022-23 to 2023-24 (-68 headcount).
Teacher FTE lost 104.5 → 95.5 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-68 students YoY 421917000409 · Pittsburgh, PA High · MID · TRAD
1,386 enr · 13.3:1 · 100.0% lunch · RII 37
Nearest enrollment peer: Pittsburgh Brashear Hs (897 students)
Pittsburgh Allderdice Hs held near 1,294 students from 2022-23 to 2023-24 (-68 headcount). Teacher FTE lost 104.5 → 95.5 across the same CCD years. Read with this school → · District book → · Pennsylvania schools → · Find another →
Pittsburgh Allderdice Hs in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Pittsburgh Allderdice Hs
1,386 students
- Pittsburgh Bra
Pittsburgh Brashear Hs
897 students
- Pittsburgh Cap
Pittsburgh Capa 6-12
840 students
- Pittsburgh Col
Pittsburgh Colfax K-8
789 students
- Pittsburgh Oba
Pittsburgh Obama 6-12
678 students
- Pittsburgh Sci
Pittsburgh Science and Technology Academ
618 students
What this shows Pittsburgh Allderdice Hs reports 1,386 students on the CCD universe file.
How Pittsburgh Allderdice Hs compares
Pittsburgh Allderdice Hs held steady on CCD headcount: ratios and free-lunch share vs Pennsylvania and U.S. means.
| Metric | This school | vs Pennsylvania | Pennsylvania avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.3:1 | ▼ 2% | 13.6:1 | 15.7:1 |
| Free-lunch eligible | 100.0% | ▲ 72% | 58.1% | 51.7% |
| Enrollment | 1,386 | top 4% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.3:1
Leaner classes than 64% of US schools, a middle-of-the-pack class size.
1,386
Bigger than 95% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
100.0%
free-lunch eligible
- 72% above the Pennsylvania average of 58.1%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
13.3:1
students per teacher
- 2% below state mean
Top 49% in Pennsylvania - lower ratio than 51% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
45.4%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$24,008
per pupil, district-wide
- above Pennsylvania avg of $18,725
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors4.0 FTE
Per 347 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 206 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 14.9 per 100 students. Reported via the Civil Rights Data Collection. Includes 4 expulsions.
Student demographics
White 47.2%
African American 31.4%
Two or More 8.2%
Hispanic or Latino 7.9%
Asian 4.7%
Native Hawaiian / Pacific Islander 0.4%
American Indian / Alaska Native 0.2%
Largest group: White at 47.2% of enrollment.
Student-body diversity index 66.3/100
Simpson diversity index - at 66.3, Pittsburgh Allderdice Hs is more mixed than the Pennsylvania school average of 37.3.
Programs
AP courses offered 23
Gifted & talented Yes
District finance for Pittsburgh Sd reports $24,008 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Pittsburgh Allderdice Hs Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Pittsburgh Brashear Hs | Smaller | Similar economic need | Lower S:T ratio |
| Pittsburgh Capa 6-12 | Smaller | Similar economic need | Higher S:T ratio |
| Pittsburgh Colfax K-8 | Smaller | Similar economic need | Similar S:T ratio |
| Pittsburgh Obama 6-12 | Smaller | Similar economic need | Lower S:T ratio |
| Pittsburgh Science and Technology Academ | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Pittsburgh Allderdice Hs's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 840
- Students per teacher
- 17.1:1
- Resource Index
- 42/100
- Enrollment
- 789
- Students per teacher
- 14.6:1
- Resource Index
- 41/100
- Enrollment
- 678
- Students per teacher
- 11.5:1
- Resource Index
- 48/100
- Enrollment
- 618
- Students per teacher
- 16.7:1
- Resource Index
- 48/100
Similar high schools in Pittsburgh
6 comparable high schools (grades 9-12) serving the same city.
Mt Lebanon Shs
Standard public school
1,772 students 14.1:1 students per teacher
North Hills Shs
Standard public school
1,443 students 14.1:1 students per teacher
Fox Chapel Area Hs
Standard public school
1,360 students 14.5:1 students per teacher
Upper Saint Clair Hs
Standard public school
1,269 students 13.8:1 students per teacher
Shaler Area Hs
Standard public school
1,160 students 11.3:1 students per teacher
Penn Hills Shs
Standard public school
1,049 students 16.9:1 students per teacher
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~1,386 students)
Frequently asked questions about Pittsburgh Allderdice Hs
How many students attend Pittsburgh Allderdice Hs?
Pittsburgh Allderdice Hs has 1,386 students enrolled. It is a high school in Pittsburgh, PA. CCD year-over-year: 1,362 (2022-23) → 1,294 (2023-24), nearly flat (-68).
What is the student-teacher ratio at Pittsburgh Allderdice Hs?
The student-teacher ratio at Pittsburgh Allderdice Hs is 13.3:1, which is 2% lower than the Pennsylvania average of 13.6:1 and 15% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Pittsburgh Allderdice Hs?
100.0% of students at Pittsburgh Allderdice Hs are eligible for free lunch, compared to the Pennsylvania average of 58.1%.
What is the racial and ethnic makeup of Pittsburgh Allderdice Hs?
The largest demographic group at Pittsburgh Allderdice Hs is White at 47.2% of enrollment, in Pittsburgh, PA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 66.3/100.
What is the Resource Investment Index for Pittsburgh Allderdice Hs?
Pittsburgh Allderdice Hs has a Resource Investment Index of 37/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Pittsburgh Allderdice Hs rank among high schools in Pittsburgh?
By Resource Investment Index, Pittsburgh Allderdice Hs ranks #14 of 16 high schools in Pittsburgh, PA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Pittsburgh on the city page.
What other schools are in Pittsburgh Sd?
Besides Pittsburgh Allderdice Hs, Pittsburgh Sd also operates Pittsburgh Brashear Hs (897 students), Pittsburgh Capa 6-12 (840 students), and Pittsburgh Colfax K-8 (789 students). See the Pittsburgh Sd district page for the complete list.