Enrollment
409
New York · 2024-25 NCES data
Other / mixed grade configuration · Mount Vernon, NY
Federal NCES profile for Pennington School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
The verdict
Pennington School earns 47/100 on the Resource Investment Index, with class sizes near the New York median.
Pennington School has class sizes near the New York median. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Pennington School ranks #7 of 10 schools in Mount Vernon, NY.
NCES ID 362010001842 Verify on NCES CCD record →
Enrollment
409
New York · 2024-25 NCES data
Teachers (FTE)
34.0
Federal CCD staff survey
Students per teacher
12:1
vs 11.8:1 New York avg
+2% vs state
Free-lunch eligible
45.3%
vs 56.2% New York avg
-19% vs state
How Pennington School compares with New York and U.S. medians
Slightly above state median
12:1 - 0.2 above the New York state median of 11.8:1, indicating larger average class loads than typical schools in the state.
Pennington School is a mid-sized combined-grade school in Mount Vernon, New York, enrolling 409 students.
At 12:1, its student-teacher ratio sits close to the New York median, within a few percentage points of the 11.8:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 45.3% of students eligible for free meals.
With 409 students, its enrollment sits close to the New York median campus size.
Its Resource Investment Index lands in the upper third of 4,801 scored New York schools.
Against 922 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #167.
Its student body is led by African American (50%) and Hispanic or Latino (29%) (diversity index 64/100).
Counselor access is stretched at roughly 409 students per counselor, well above the ASCA-recommended 250:1 ceiling.
The surrounding Mount Vernon School District spends $31,918 per pupil, 21% above the New York average, a better-resourced district than most.
Mount Vernon School District also operates Mount Vernon High School (1,062 students) and Mount Vernon Steam Academy (747 students) alongside Pennington School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
Pennington School on the metrics families compare, against New York and U.S. means.
| Metric | This school | vs New York | New York avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12:1 | ▲ 2% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 45.3% | ▼ 19% | 56.2% | 51.7% |
| Enrollment | 409 | top 53% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Largest group: African American at 50.0% of enrollment.
Simpson diversity index - at 64.4, Pennington School is more mixed than the New York school average of 45.5.
District-wide per-pupil expenditure for Mount Vernon School District, which includes Pennington School.
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mount Vernon High School | Larger | Higher economic need | Similar S:T ratio |
| Mount Vernon Steam Academy | Larger | Higher economic need | Higher S:T ratio |
| Lincoln School | Similar size | Higher economic need | Similar S:T ratio |
| Denzel Washington School-Arts | Similar size | Higher economic need | Higher S:T ratio |
| Graham School | Similar size | Higher economic need | Similar S:T ratio |
Comparisons are relative to Pennington School's own figures; each column derives from NCES Common Core of Data.
Matched by enrollment size and by staffing ratio across all of New York, not just this city - a different peer set than the local comparisons above.
Next steps
Verify locally before acting on Pennington School's federal record.
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Pennington School has 409 students enrolled. It is a public school in Mount Vernon, NY.
The student-teacher ratio at Pennington School is 12:1, which is 2% higher than the New York average of 11.8:1 and 24% lower than the national average of 15.7:1.
45.3% of students at Pennington School are eligible for free lunch, compared to the New York average of 56.2%.
The largest demographic group at Pennington School is African American at 50.0% of enrollment, in Mount Vernon, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 64.4/100.
Pennington School has a Resource Investment Index of 47/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Pennington School ranks #7 of 10 schools in Mount Vernon, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Mount Vernon on the city page.
Pennington School earns 47/100 on the Resource Investment Index, with class sizes near the New York median. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
Besides Pennington School, Mount Vernon School District also operates Mount Vernon High School (1,062 students), Mount Vernon Steam Academy (747 students), and Lincoln School (470 students). See the Mount Vernon School District district page for the complete list.
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.
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Last updated:
PlainSchools, “Pennington School, Mount Vernon NY.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/pennington-school-ny
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