Enrollment
460
New Jersey · 2024-25 NCES data
Elementary school (grades K-5) · Piscataway, NJ
Knollwood Elementary School
Federal NCES profile for Knollwood Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 48/100.
2024-25 NCES dataElementary school (grades K-5)NCES 341305000042
👥 S:T ratio 42
🌟 Gifted program 70
🎓 Counselors 8
📋 Attendance 72
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Knollwood Elementary School earns 48/100 on the Resource Investment Index, with class sizes larger than 88% of New Jersey schools. It is also more racially and ethnically mixed than most New Jersey schools.
- #1 of 6
- elementary schools in Piscataway · Resource Index
- 48
- Resource Index · Typical
- 14.4:1
- large classes for New Jersey
- 20.3%
- free-lunch eligible
Knollwood Elementary School has class sizes larger than 88% of New Jersey schools. Computed live against every New Jersey school reporting to NCES.
By Resource Investment Index, Knollwood Elementary School ranks #1 of 6 elementary schools in Piscataway, NJ.
School address
District: Piscataway Township School District · New Jersey
NCES ID 341305000042 Verify on NCES CCD record →
Teachers (FTE)
32.0
Federal CCD staff survey
Students per teacher
14.4:1
vs 11.8:1 New Jersey avg
+22% vs state
Free-lunch eligible
20.3%
vs 29.6% New Jersey avg
-31% vs state
Student-teacher ratio in context
How Knollwood Elementary School compares with New Jersey and U.S. medians
What stands out at Knollwood Elementary School
Knollwood Elementary School is a mid-sized elementary school in Piscataway, New Jersey, enrolling 460 students.
Class loads run heavy: 14.4:1 is larger than about 88% of New Jersey schools and 22% above the 11.8:1 state mean, so each teacher carries more students than is typical.
Its free-meal eligibility rate of 20.3% lands close to the New Jersey typical range, neither a high- nor low-need campus by this measure.
With 460 students, its enrollment sits close to the New Jersey median campus size.
Its Resource Investment Index lands in the lower third of 2,501 scored New Jersey schools.
Among 630 similarly sized, similarly resourced-need New Jersey schools statewide, it ranks #449, in the lower tier once campus size and economic need are matched.
Its student body is led by Asian (42%) and Hispanic or Latino (20%), more mixed than most schools in the state (diversity index 73/100).
Counselor access is stretched at roughly 460 students per counselor, well above the ASCA-recommended 250:1 ceiling.
11.3% of students were chronically absent in the 2021-22 collection, in line with the post-pandemic national range.
Piscataway Township School District also operates Piscataway Township High School (2,144 students) and Piscataway Township Schools Children's Corner (616 students) alongside Knollwood 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 Knollwood Elementary School compares
Knollwood 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 | 14.4:1 | ▲ 22% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 20.3% | ▼ 31% | 29.6% | 51.7% |
| Enrollment | 460 | top 46% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.4:1
Leaner classes than 53% of US schools, a middle-of-the-pack class size.
460
Bigger than 56% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
20.3%
free-lunch eligible
- 31% 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
14.4:1
students per teacher
- 22% above state mean
Top 88% in New Jersey - lower ratio than 12% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
11.3%
chronically absent (missed 10%+ of school days)
In the 10-15% range, above the pre-pandemic national baseline but within the broader post-pandemic picture.
Funding equity
$22,459
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 460 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 42.0%
Hispanic or Latino 19.8%
African American 16.1%
White 14.1%
Two or More 7.2%
American Indian / Alaska Native 0.9%
Largest group: Asian at 42.0% of enrollment.
Student-body diversity index 73.3/100
Simpson diversity index - at 73.3, Knollwood 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 Piscataway Township School District, which includes Knollwood Elementary School.
$22,459
Per student
-10%
vs New Jersey
Avg $24,984
+35%
vs U.S.
Avg $16,593
Revenue mix
Local 59.8%
State 32.5%
Federal 7.7%
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 Knollwood Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Piscataway Township High School | Larger | Similar economic need | Similar S:T ratio |
| Piscataway Township Schools Children's Corner | Larger | Similar economic need | No ratio data |
| Grandview Elementary School | Larger | Similar economic need | Lower S:T ratio |
| Theodore Schor Middle School | Similar size | Similar economic need | Lower S:T ratio |
| Arbor Elementary School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Knollwood Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,144
- Students per teacher
- 14:1
- Resource Index
- 48/100
- Enrollment
- 616
- Students per teacher
- -
- Resource Index
- 30/100
- Enrollment
- 579
- Students per teacher
- 7.5:1
- Resource Index
- 44/100
- Enrollment
- 563
- Students per teacher
- 12.8:1
- Resource Index
- 50/100
- Enrollment
- 528
- Students per teacher
- 14.3:1
- Resource Index
- 45/100
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 (~460 students)
Next steps
Verify locally before acting on Knollwood Elementary School's federal record.
- Compare Knollwood Elementary School against another school. Compare schools
- Piscataway 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 Knollwood Elementary School
How many students attend Knollwood Elementary School?
Knollwood Elementary School has 460 students enrolled. It is an elementary school in Piscataway, NJ.
What is the student-teacher ratio at Knollwood Elementary School?
The student-teacher ratio at Knollwood Elementary School is 14.4:1, which is 22% higher than the New Jersey average of 11.8:1 and 8% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Knollwood Elementary School?
20.3% of students at Knollwood Elementary School are eligible for free lunch, compared to the New Jersey average of 29.6%.
What is the racial and ethnic makeup of Knollwood Elementary School?
The largest demographic group at Knollwood Elementary School is Asian at 42.0% of enrollment, in Piscataway, NJ. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 73.3/100.
What is the Resource Investment Index for Knollwood Elementary School?
Knollwood Elementary School has a Resource Investment Index of 48/100 (typical 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 Knollwood Elementary School rank among elementary schools in Piscataway?
By Resource Investment Index, Knollwood Elementary School ranks #1 of 6 elementary schools in Piscataway, 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 Piscataway on the city page.
Is Knollwood Elementary School a good school?
Knollwood Elementary School earns 48/100 on the Resource Investment Index, with class sizes larger than 88% of New Jersey schools. It is also more racially and ethnically mixed than most 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 Piscataway Township School District?
Besides Knollwood Elementary School, Piscataway Township School District also operates Piscataway Township High School (2,144 students), Piscataway Township Schools Children's Corner (616 students), and Grandview Elementary School (579 students). See the Piscataway 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.