- Enrollment
- 1,674
- Students per teacher
- 12:1
- Resource Index
- 56/100
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 →
CCD year-over-year · 2022-23 → 2023-24
-2 students YoY
Black Rock Ms held near 1,030 students from 2022-23 to 2023-24 (-2 headcount).
Teacher FTE added 101.2 → 106.7 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-2 students YoY 421416010025 · Villanova, PA Elementary · MID · TRAD
1,077 enr · 10.7:1 · 12.0% lunch · RII 57
Nearest enrollment peer: Lower Merion Hs (1,674 students)
Black Rock Ms held near 1,030 students from 2022-23 to 2023-24 (-2 headcount). Teacher FTE added 101.2 → 106.7 across the same CCD years. Read with this school → · District book → · Pennsylvania schools → · Find another →
Black Rock Ms in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Lower Merion H
Lower Merion Hs
1,674 students
- Harriton Shs
Harriton Shs
1,239 students
- This school
Black Rock Ms
1,077 students
- Bala-Cynwyd Ms
Bala-Cynwyd Ms
794 students
- Welsh Valley M
Welsh Valley Ms
788 students
- Penn Wynne Sch 621
Penn Wynne Sch
621 students
What this shows Black Rock Ms reports 1,077 students on the CCD universe file.
How Black Rock Ms compares
Black Rock Ms 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 | 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 methodology
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
$31,409
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.
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.
District finance for Lower Merion Sd reports $31,409 per pupil (NCES F-33) - open the district page for the full revenue mix.
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
- 1,239
- 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
Nationwide elementary 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 (~1,077 students)
Similar student-teacher ratio (~10.7:1)
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. CCD year-over-year: 1,032 (2022-23) → 1,030 (2023-24), nearly flat (-2).
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.
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.