Enrollment
298
New Jersey · 2024-25 NCES data
Other / mixed grade configuration · Dover, NJ
Dennis B O'brien Elementary School
Federal NCES profile for Dennis B O'brien Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 65/100.
2024-25 NCES dataOther / mixed grade configurationNCES 341413004516
👥 S:T ratio 62
🌟 Gifted program 70
🎓 Counselors 40
📋 Attendance 88
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Dennis B O'brien Elementary School earns 65/100 on the Resource Investment Index, with class sizes smaller than 80% of New Jersey schools. It is also more racially and ethnically mixed than most New Jersey schools.
- #1 of 4
- schools in Dover · Resource Index
- 65
- Resource Index · Higher
- 9.6:1
- small classes for New Jersey
- 12.0%
- free-lunch eligible
Dennis B O'brien Elementary School has class sizes smaller than 80% of New Jersey schools. Computed live against every New Jersey school reporting to NCES.
By Resource Investment Index, Dennis B O'brien Elementary School ranks #1 of 4 schools in Dover, NJ.
School address
District: Rockaway Township School District · New Jersey
NCES ID 341413004516 Verify on NCES CCD record →
Teachers (FTE)
31.0
Federal CCD staff survey
Students per teacher
9.6:1
vs 11.8:1 New Jersey avg
-19% vs state
Free-lunch eligible
12.0%
vs 29.6% New Jersey avg
-59% vs state
Student-teacher ratio in context
How Dennis B O'brien Elementary School compares with New Jersey and U.S. medians
What stands out at Dennis B O'brien Elementary School
Dennis B O'brien Elementary School is a lower-poverty, mid-sized combined-grade school in Dover, New Jersey, enrolling 298 students.
Class sizes run a bit leaner than typical: 9.6:1 puts it in the smaller third of New Jersey schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 12.0% of students eligible for free meals.
Enrollment of 298 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 568 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #88.
Its student body is led by White (39%) and Hispanic or Latino (31%), more mixed than most schools in the state (diversity index 72/100).
Counselor coverage runs a bit thin, about 298 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Attendance holds up well here: only 5.0% of students were chronically absent, below the typical post-pandemic national figure.
Rockaway Township School District also operates Copeland Middle School (799 students) and Stony Brook Elementary School (365 students) alongside Dennis B O'brien 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 Dennis B O'brien Elementary School compares
Dennis B O'brien 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 | 9.6:1 | ▼ 19% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 12.0% | ▼ 59% | 29.6% | 51.7% |
| Enrollment | 298 | top 75% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.6:1
Leaner classes than 91% of US schools, among the more generously staffed nationally.
298
Bigger than 32% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
12.0%
free-lunch eligible
- 59% 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
9.6:1
students per teacher
- 19% below state mean
Top 20% in New Jersey - lower ratio than 80% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
5.0%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$26,372
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 298 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 0 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 0.3 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 39.3%
Hispanic or Latino 30.5%
Asian 13.8%
African American 11.4%
Two or More 4.7%
American Indian / Alaska Native 0.3%
Largest group: White at 39.3% of enrollment.
Student-body diversity index 71.8/100
Simpson diversity index - at 71.8, Dennis B O'brien 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 Rockaway Township School District, which includes Dennis B O'brien Elementary School.
$26,372
Per student
+6%
vs New Jersey
Avg $24,984
+59%
vs U.S.
Avg $16,593
Revenue mix
Local 72.1%
State 23.6%
Federal 4.3%
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 Dennis B O'brien Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Copeland Middle School | Larger | Similar economic need | Similar S:T ratio |
| Stony Brook Elementary School | Similar size | Similar economic need | Similar S:T ratio |
| Catherine a Dwyer Elementary School | Similar size | Similar economic need | Similar S:T ratio |
| Birchwood Elementary School | Similar size | Similar economic need | Similar S:T ratio |
| Katharine D Malone Elementary School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Dennis B O'brien Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 799
- Students per teacher
- 10.5:1
- Resource Index
- 63/100
- Enrollment
- 365
- Students per teacher
- 9.6:1
- Resource Index
- 59/100
- Enrollment
- 346
- Students per teacher
- 10.5:1
- Resource Index
- 61/100
- Enrollment
- 314
- Students per teacher
- 10.1:1
- Resource Index
- 51/100
- Enrollment
- 303
- Students per teacher
- 10.1:1
- Resource Index
- 62/100
Similar other 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 (~298 students)
Similar student-teacher ratio (~9.6:1)
Next steps
Verify locally before acting on Dennis B O'brien Elementary School's federal record.
- Compare Dennis B O'brien Elementary School against another school. Compare schools
- Rockaway 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 Dennis B O'brien Elementary School
How many students attend Dennis B O'brien Elementary School?
Dennis B O'brien Elementary School has 298 students enrolled. It is a public school in Dover, NJ.
What is the student-teacher ratio at Dennis B O'brien Elementary School?
The student-teacher ratio at Dennis B O'brien Elementary School is 9.6:1, which is 19% lower than the New Jersey average of 11.8:1 and 39% 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 Dennis B O'brien Elementary School?
12.0% of students at Dennis B O'brien Elementary School are eligible for free lunch, compared to the New Jersey average of 29.6%.
What is the racial and ethnic makeup of Dennis B O'brien Elementary School?
The largest demographic group at Dennis B O'brien Elementary School is White at 39.3% of enrollment, in Dover, NJ. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 71.8/100.
What is the Resource Investment Index for Dennis B O'brien Elementary School?
Dennis B O'brien Elementary School has a Resource Investment Index of 65/100 (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 Dennis B O'brien Elementary School rank among schools in Dover?
By Resource Investment Index, Dennis B O'brien Elementary School ranks #1 of 4 schools in Dover, NJ. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Dover on the city page.
Is Dennis B O'brien Elementary School a good school?
Dennis B O'brien Elementary School earns 65/100 on the Resource Investment Index, with class sizes smaller than 80% 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 Rockaway Township School District?
Besides Dennis B O'brien Elementary School, Rockaway Township School District also operates Copeland Middle School (799 students), Stony Brook Elementary School (365 students), and Catherine a Dwyer Elementary School (346 students). See the Rockaway 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.