Enrollment
285
New Jersey · 2024-25 NCES data
Elementary school (grades K-5) · Montville, NJ
William Mason School
Federal NCES profile for William Mason School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 66/100.
2024-25 NCES dataElementary school (grades K-5)NCES 341065004342
👥 S:T ratio 66
🌟 Gifted program 70
🎓 Counselors 43
📋 Attendance 84
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
William Mason School earns 66/100 on the Resource Investment Index, with class sizes smaller than 89% of New Jersey schools.
- #3 of 3
- public schools in Montville · Resource Index
- 66
- Resource Index · Higher
- 8.6:1
- small classes for New Jersey
- 3.2%
- free-lunch eligible
William Mason School has class sizes smaller than 89% of New Jersey schools. Computed live against every New Jersey school reporting to NCES.
By Resource Investment Index, William Mason School ranks #3 of 3 public schools in Montville, NJ.
School address
District: Montville Township School District · New Jersey
NCES ID 341065004342 Verify on NCES CCD record →
Teachers (FTE)
33.0
Federal CCD staff survey
Students per teacher
8.6:1
vs 11.8:1 New Jersey avg
-27% vs state
Free-lunch eligible
3.2%
vs 29.6% New Jersey avg
-89% vs state
Student-teacher ratio in context
How William Mason School compares with New Jersey and U.S. medians
What stands out at William Mason School
William Mason School is a lower-poverty, mid-sized elementary school in Montville, New Jersey, enrolling 285 students.
Classes run notably small here: at 8.6:1, William Mason School is leaner than roughly 89% of New Jersey schools and 27% under the state's 11.8:1 norm, more adult attention per pupil than most peers.
Comparatively few students face economic hardship here, 3.2% free-meal eligibility runs 89% below the New Jersey average.
Enrollment of 285 puts it in the smaller third of New Jersey schools by headcount.
Its Resource Investment Index lands in the upper third of 2,501 scored New Jersey schools.
Against 432 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #68.
Its student body is led by White (72%) and Asian (13%) (diversity index 45/100).
Counselor coverage runs a bit thin, about 285 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance holds up well here: only 6.3% of students were chronically absent, below the typical post-pandemic national figure.
Montville Township School District also operates Montville Township High School (1,035 students) and Robert R Lazar Middle School (798 students) alongside William Mason 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
How William Mason School compares
William Mason School on the metrics families compare, against New Jersey and U.S. means.
| Metric | This school | vs New Jersey | New Jersey avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 8.6:1 | ▼ 27% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 3.2% | ▼ 89% | 29.6% | 51.7% |
| Enrollment | 285 | top 77% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
8.6:1
Leaner classes than 94% of US schools, among the more generously staffed nationally.
285
Bigger than 30% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
3.2%
free-lunch eligible
- 89% below the New Jersey average of 29.6%
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
8.6:1
students per teacher
- 27% below state mean
Top 11% in New Jersey - lower ratio than 89% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
6.3%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$28,428
per pupil, district-wide
- above New Jersey avg of $24,984
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 285 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
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 72.3%
Asian 12.6%
Hispanic or Latino 11.2%
Two or More 3.2%
African American 0.7%
Largest group: White at 72.3% of enrollment.
Student-body diversity index 44.8/100
Simpson diversity index - at 44.8, William Mason School is less mixed than the New Jersey school average of 51.2.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Montville Township School District, which includes William Mason School.
$28,428
Per student
+14%
vs New Jersey
Avg $24,984
+71%
vs U.S.
Avg $16,593
Revenue mix
Local 73.7%
State 24.5%
Federal 1.8%
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 William Mason School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Montville Township High School | Larger | Similar economic need | Similar S:T ratio |
| Robert R Lazar Middle School | Larger | Similar economic need | Higher S:T ratio |
| Woodmont School | Larger | Similar economic need | Higher S:T ratio |
| Valley View School | Larger | Similar economic need | Higher S:T ratio |
| Cedar Hill School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to William Mason School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,035
- Students per teacher
- 9.7:1
- Resource Index
- 76/100
- Enrollment
- 798
- Students per teacher
- 10.6:1
- Resource Index
- 71/100
- Enrollment
- 366
- Students per teacher
- 10.8:1
- Resource Index
- 58/100
- Enrollment
- 360
- Students per teacher
- 10.6:1
- Resource Index
- 62/100
- Enrollment
- 329
- Students per teacher
- 10:1
- Resource Index
- 59/100
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of New Jersey, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~285 students)
Next steps
Verify locally before acting on William Mason School's federal record.
- Compare William Mason School against another school. Compare schools
- Montville Township School District'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 William Mason School
How many students attend William Mason School?
William Mason School has 285 students enrolled. It is an elementary school in Montville, NJ.
What is the student-teacher ratio at William Mason School?
The student-teacher ratio at William Mason School is 8.6:1, which is 27% lower than the New Jersey average of 11.8:1 and 45% 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 William Mason School?
3.2% of students at William Mason School are eligible for free lunch, compared to the New Jersey average of 29.6%.
What is the racial and ethnic makeup of William Mason School?
The largest demographic group at William Mason School is White at 72.3% of enrollment, in Montville, NJ.
What is the Resource Investment Index for William Mason School?
William Mason School has a Resource Investment Index of 66/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does William Mason School rank among public schools in Montville?
By Resource Investment Index, William Mason School ranks #3 of 3 public schools in Montville, NJ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Montville on the city page.
Is William Mason School a good school?
William Mason School earns 66/100 on the Resource Investment Index, with class sizes smaller than 89% of New Jersey 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 Montville Township School District?
Besides William Mason School, Montville Township School District also operates Montville Township High School (1,035 students), Robert R Lazar Middle School (798 students), and Woodmont School (366 students). See the Montville Township School District 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.