Enrollment
1,077
Pennsylvania · 2024-25 NCES data
Elementary school (grades K-5) · Villanova, PA
Black Rock Ms
Federal NCES profile for Black Rock Ms, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 57/100.
2024-25 NCES dataElementary school (grades K-5)NCES 421416010025
👥 S:T ratio 57
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Black Rock Ms earns 57/100 on the Resource Investment Index, with class sizes smaller than 87% of Pennsylvania schools. It is also more racially and ethnically mixed than most Pennsylvania schools.
- 57
- Resource Index · Higher
- 10.7:1
- small classes for Pennsylvania
- 12.0%
- free-lunch eligible
- 1,077
- students enrolled
Black Rock Ms has class sizes smaller than 87% of Pennsylvania schools. Computed live against every Pennsylvania school reporting to NCES.
School address
District: Lower Merion Sd · Pennsylvania
NCES ID 421416010025 Verify on NCES CCD record →
Teachers (FTE)
101.0
Federal CCD staff survey
Students per teacher
10.7:1
vs 13.6:1 Pennsylvania avg
-21% vs state
Free-lunch eligible
12.0%
vs 58.1% Pennsylvania avg
-79% vs state
Student-teacher ratio in context
How Black Rock Ms compares with Pennsylvania and U.S. medians
What stands out at Black Rock Ms
Black Rock Ms is a lower-poverty, large elementary school in Villanova, Pennsylvania, enrolling 1,077 students.
Classes run notably small here: at 10.7:1, Black Rock Ms is leaner than roughly 87% of Pennsylvania schools and 21% under the state's 13.6:1 norm, more adult attention per pupil than most peers.
Comparatively few students face economic hardship here, 12.0% free-meal eligibility runs 79% below the Pennsylvania average.
By headcount it is one of the larger campuses in Pennsylvania, bigger than 92% of state schools at 1,077 students.
Its Resource Investment Index lands in the upper third of 2,889 scored Pennsylvania schools.
Against 172 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #48.
Its student body is led by White (62%) and Asian (11%), more mixed than most schools in the state (diversity index 58/100).
The surrounding Lower Merion Sd spends $30,110 per pupil, 68% above the Pennsylvania average, a better-resourced district than most.
Lower Merion Sd also operates Lower Merion Hs (1,674 students) and Harriton Shs (1,239 students) alongside Black Rock Ms.
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
How Black Rock Ms compares
Black Rock Ms on the metrics families compare, against Pennsylvania and U.S. means.
| Metric | This school | vs Pennsylvania | Pennsylvania avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.7:1 | ▼ 21% | 13.6:1 | 15.7:1 |
| Free-lunch eligible | 12.0% | ▼ 79% | 58.1% | 51.7% |
| Enrollment | 1,077 | top 8% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.7:1
Leaner classes than 85% of US schools, among the more generously staffed nationally.
1,077
Bigger than 92% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
12.0%
free-lunch eligible
- 79% below the Pennsylvania average of 58.1%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
10.7:1
students per teacher
- 21% below state mean
Top 13% in Pennsylvania - lower ratio than 87% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Funding equity
$30,110
per pupil, district-wide
- above Pennsylvania avg of $17,970
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
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.
Student demographics
White 62.3%
Asian 11.0%
African American 10.8%
Two or More 9.7%
Hispanic or Latino 6.1%
Largest group: White at 62.3% of enrollment.
Student-body diversity index 57.5/100
Simpson diversity index - at 57.5, Black Rock Ms is more mixed than the Pennsylvania school average of 37.3.
Funding & spending
District-wide per-pupil expenditure for Lower Merion Sd, which includes Black Rock Ms.
$30,110
Per student
+68%
vs Pennsylvania
Avg $17,970
+81%
vs U.S.
Avg $16,593
Revenue mix
Local 83.7%
State 14.1%
Federal 2.3%
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.
How Black Rock Ms Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Lower Merion Hs | Larger | Similar economic need | Similar S:T ratio |
| Harriton Shs | Similar size | Similar economic need | Similar S:T ratio |
| Bala-Cynwyd Ms | Smaller | Similar economic need | Similar S:T ratio |
| Welsh Valley Ms | Smaller | Similar economic need | Similar S:T ratio |
| Penn Wynne Sch | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to Black Rock Ms's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,674
- Students per teacher
- 12:1
- Resource Index
- 56/100
- Enrollment
- 1,239
- Students per teacher
- 10.5:1
- Resource Index
- 63/100
- Enrollment
- 794
- Students per teacher
- 10.1:1
- Resource Index
- 70/100
- Enrollment
- 788
- Students per teacher
- 9.8:1
- Resource Index
- 68/100
- Enrollment
- 621
- Students per teacher
- 12.9:1
- Resource Index
- 61/100
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Pennsylvania, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~1,077 students)
Similar student-teacher ratio (~10.7:1)
Next steps
Verify locally before acting on Black Rock Ms's federal record.
- Compare Black Rock Ms against another school. Compare schools
- Lower Merion Sd's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
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.
Frequently asked questions about Black Rock Ms
How many students attend Black Rock Ms?
Black Rock Ms has 1,077 students enrolled. It is an elementary school in Villanova, PA.
What is the student-teacher ratio at Black Rock Ms?
The student-teacher ratio at Black Rock Ms is 10.7:1, which is 21% lower than the Pennsylvania average of 13.6:1 and 32% 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 Black Rock Ms?
12.0% of students at Black Rock Ms are eligible for free lunch, compared to the Pennsylvania average of 58.1%.
What is the racial and ethnic makeup of Black Rock Ms?
The largest demographic group at Black Rock Ms is White at 62.3% of enrollment, in Villanova, PA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 57.5/100.
What is the Resource Investment Index for Black Rock Ms?
Black Rock Ms has a Resource Investment Index of 57/100 (higher reported resources relative to schools nationally) based on 1 factor: student-teacher ratio. Not a test-score or academic measure (national median ~41/100, see methodology). Limited indicators were available, so the index reflects partial data.
Is Black Rock Ms a good school?
Black Rock Ms earns 57/100 on the Resource Investment Index, with class sizes smaller than 87% of Pennsylvania schools. It is also more racially and ethnically mixed than most Pennsylvania schools. 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.
What other schools are in Lower Merion Sd?
Besides Black Rock Ms, Lower Merion Sd also operates Lower Merion Hs (1,674 students), Harriton Shs (1,239 students), and Bala-Cynwyd Ms (794 students). See the Lower Merion Sd district page for the complete list.
Related tools
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.