Enrollment
288
New Jersey · 2024-25 NCES data
Elementary school (grades K-5) · Iselin, NJ
Robert Mascenik Elementary School
Federal NCES profile for Robert Mascenik Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 60/100.
2024-25 NCES dataElementary school (grades K-5)NCES 341812003688
👥 S:T ratio 50
🌟 Gifted program 70
🎓 Counselors 42
📋 Attendance 79
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Robert Mascenik Elementary School earns 60/100 on the Resource Investment Index, with class sizes near the New Jersey median.
- #1 of 3
- elementary schools in Iselin · Resource Index
- 60
- Resource Index · Higher
- 12.5:1
- students per teacher
- 10.3%
- free-lunch eligible
Robert Mascenik Elementary School has class sizes near the New Jersey median. Computed live against every New Jersey school reporting to NCES.
By Resource Investment Index, Robert Mascenik Elementary School ranks #1 of 3 elementary schools in Iselin, NJ.
School address
District: Woodbridge Township School District · New Jersey
NCES ID 341812003688 Verify on NCES CCD record →
Teachers (FTE)
23.0
Federal CCD staff survey
Students per teacher
12.5:1
vs 11.8:1 New Jersey avg
+6% vs state
Free-lunch eligible
10.3%
vs 29.6% New Jersey avg
-65% vs state
Student-teacher ratio in context
How Robert Mascenik Elementary School compares with New Jersey and U.S. medians
What stands out at Robert Mascenik Elementary School
Robert Mascenik Elementary School is a lower-poverty, mid-sized elementary school in Iselin, New Jersey, enrolling 288 students.
Class loads run somewhat heavier than typical: 12.5:1 puts it in the larger third of New Jersey schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 10.3% of students eligible for free meals.
Enrollment of 288 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 524 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #180.
Its student body is led by Asian (43%) and White (29%) (diversity index 68/100).
Counselor coverage runs a bit thin, about 288 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance holds up well here: only 8.3% of students were chronically absent, below the typical post-pandemic national figure.
Woodbridge Township School District also operates Woodbridge High School (1,681 students) and John F. Kennedy Memorial High School (1,405 students) alongside Robert Mascenik Elementary 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 Robert Mascenik Elementary School compares
Robert Mascenik Elementary 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 | 12.5:1 | ▲ 6% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 10.3% | ▼ 65% | 29.6% | 51.7% |
| Enrollment | 288 | top 77% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.5:1
Leaner classes than 71% of US schools, among the more generously staffed nationally.
288
Bigger than 31% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
10.3%
free-lunch eligible
- 65% below the New Jersey average of 29.6%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
12.5:1
students per teacher
- 6% above state mean
Top 68% in New Jersey - lower ratio than 32% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
8.3%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$22,601
per pupil, district-wide
- below 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 288 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
Asian 43.4%
White 28.8%
Hispanic or Latino 20.5%
African American 4.5%
Two or More 2.8%
Largest group: Asian at 43.4% of enrollment.
Student-body diversity index 68.4/100
Simpson diversity index - at 68.4, Robert Mascenik Elementary School is more mixed than the New Jersey school average of 51.2.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Woodbridge Township School District, which includes Robert Mascenik Elementary School.
$22,601
Per student
-10%
vs New Jersey
Avg $24,984
+36%
vs U.S.
Avg $16,593
Revenue mix
Local 57.9%
State 36.9%
Federal 5.2%
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 Robert Mascenik Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Woodbridge High School | Larger | Higher economic need | Similar S:T ratio |
| John F. Kennedy Memorial High School | Larger | Higher economic need | Similar S:T ratio |
| Colonia High School | Larger | Higher economic need | Similar S:T ratio |
| Iselin Middle School | Larger | Higher economic need | Similar S:T ratio |
| Lafayette Estates Elementary School | Larger | Higher economic need | Higher S:T ratio |
Comparisons are relative to Robert Mascenik Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,681
- Students per teacher
- 12.8:1
- Resource Index
- 43/100
- Enrollment
- 1,405
- Students per teacher
- 12.3:1
- Resource Index
- 44/100
- Enrollment
- 1,354
- Students per teacher
- 11.1:1
- Resource Index
- 60/100
- Enrollment
- 794
- Students per teacher
- 11.3:1
- Resource Index
- 55/100
- Enrollment
- 705
- Students per teacher
- 20.7:1
- Resource Index
- 40/100
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 (~288 students)
Next steps
Verify locally before acting on Robert Mascenik Elementary School's federal record.
- Compare Robert Mascenik Elementary School against another school. Compare schools
- Woodbridge 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 Robert Mascenik Elementary School
How many students attend Robert Mascenik Elementary School?
Robert Mascenik Elementary School has 288 students enrolled. It is an elementary school in Iselin, NJ.
What is the student-teacher ratio at Robert Mascenik Elementary School?
The student-teacher ratio at Robert Mascenik Elementary School is 12.5:1, which is 6% higher than the New Jersey average of 11.8:1 and 20% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Robert Mascenik Elementary School?
10.3% of students at Robert Mascenik Elementary School are eligible for free lunch, compared to the New Jersey average of 29.6%.
What is the racial and ethnic makeup of Robert Mascenik Elementary School?
The largest demographic group at Robert Mascenik Elementary School is Asian at 43.4% of enrollment, in Iselin, NJ. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 68.4/100.
What is the Resource Investment Index for Robert Mascenik Elementary School?
Robert Mascenik Elementary School has a Resource Investment Index of 60/100 (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 Robert Mascenik Elementary School rank among elementary schools in Iselin?
By Resource Investment Index, Robert Mascenik Elementary School ranks #1 of 3 elementary schools in Iselin, NJ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Iselin on the city page.
Is Robert Mascenik Elementary School a good school?
Robert Mascenik Elementary School earns 60/100 on the Resource Investment Index, with class sizes near the New Jersey 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.
What other schools are in Woodbridge Township School District?
Besides Robert Mascenik Elementary School, Woodbridge Township School District also operates Woodbridge High School (1,681 students), John F. Kennedy Memorial High School (1,405 students), and Colonia High School (1,354 students). See the Woodbridge 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.