Enrollment
313
New York · 2024-25 NCES data
Elementary school (grades K-5) · Ronkonkoma, NY
Helen B Duffield Elementary School
Federal NCES profile for Helen B Duffield Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
2024-25 NCES dataElementary school (grades K-5)NCES 360816004383
👥 S:T ratio 57
🌟 Gifted program 30
🎓 Counselors 37
📋 Attendance 31
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Helen B Duffield Elementary School earns 39/100 on the Resource Investment Index, with class sizes near the New York median.
- #3 of 4
- public schools in Ronkonkoma · Resource Index
- 39
- Resource Index · Typical
- 10.8:1
- students per teacher
- 29.8%
- free-lunch eligible
Helen B Duffield Elementary School has class sizes near the New York median. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Helen B Duffield Elementary School ranks #3 of 4 public schools in Ronkonkoma, NY.
School address
District: Connetquot Central School District · New York
NCES ID 360816004383 Verify on NCES CCD record →
Teachers (FTE)
29.0
Federal CCD staff survey
Students per teacher
10.8:1
vs 11.8:1 New York avg
-8% vs state
Free-lunch eligible
29.8%
vs 56.2% New York avg
-47% vs state
Student-teacher ratio in context
How Helen B Duffield Elementary School compares with New York and U.S. medians
What stands out at Helen B Duffield Elementary School
Helen B Duffield Elementary School is a mid-sized elementary school in Ronkonkoma, New York, enrolling 313 students.
At 10.8:1, its student-teacher ratio sits close to the New York median, within a few percentage points of the 11.8:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 29.8% of students eligible for free meals.
Enrollment of 313 puts it in the smaller third of New York schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 4,801 scored New York schools.
Against 623 statewide peers matched on enrollment and economic need, it ranks mid-pack at #413.
Its student body is led by White (51%) and Hispanic or Latino (26%) (diversity index 65/100).
Counselor coverage runs a bit thin, about 313 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 27.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Connetquot Central School District spends $35,550 per pupil, 35% above the New York average, a better-resourced district than most.
Connetquot Central School District also operates Connetquot High School (1,774 students) and Ronkonkoma Middle School (641 students) alongside Helen B Duffield 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 Helen B Duffield Elementary School compares
Helen B Duffield Elementary School on the metrics families compare, against New York and U.S. means.
| Metric | This school | vs New York | New York avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 10.8:1 | ▼ 8% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 29.8% | ▼ 47% | 56.2% | 51.7% |
| Enrollment | 313 | top 73% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.8:1
Leaner classes than 84% of US schools, among the more generously staffed nationally.
313
Bigger than 34% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
29.8%
free-lunch eligible
- 47% below the New York average of 56.2%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
10.8:1
students per teacher
- 8% below state mean
Top 42% in New York - lower ratio than 58% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
27.8%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$35,550
per pupil, district-wide
- above New York avg of $26,410
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 313 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 50.5%
Hispanic or Latino 25.9%
Asian 15.3%
African American 4.5%
Two or More 3.5%
American Indian / Alaska Native 0.3%
Largest group: White at 50.5% of enrollment.
Student-body diversity index 65.1/100
Simpson diversity index - at 65.1, Helen B Duffield Elementary School is more mixed than the New York school average of 45.5.
Programs
Funding & spending
District-wide per-pupil expenditure for Connetquot Central School District, which includes Helen B Duffield Elementary School.
$35,550
Per student
+35%
vs New York
Avg $26,410
+114%
vs U.S.
Avg $16,593
Revenue mix
Local 64.6%
State 32.3%
Federal 3.1%
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 Helen B Duffield Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Connetquot High School | Larger | Similar economic need | Similar S:T ratio |
| Ronkonkoma Middle School | Larger | Similar economic need | Lower S:T ratio |
| Cherokee Street Elementary School | Larger | Similar economic need | Similar S:T ratio |
| Oakdale-Bohemia Middle School | Larger | Similar economic need | Lower S:T ratio |
| Sycamore Avenue Elementary School | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Helen B Duffield Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,774
- Students per teacher
- 11.2:1
- Resource Index
- 45/100
- Enrollment
- 641
- Students per teacher
- 9.2:1
- Resource Index
- 55/100
- Enrollment
- 618
- Students per teacher
- 10.7:1
- Resource Index
- 39/100
- Enrollment
- 564
- Students per teacher
- 8.7:1
- Resource Index
- 56/100
- Enrollment
- 380
- Students per teacher
- 8.1:1
- Resource Index
- 49/100
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of New York, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~313 students)
Next steps
Verify locally before acting on Helen B Duffield Elementary School's federal record.
- Compare Helen B Duffield Elementary School against another school. Compare schools
- Connetquot Central 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 Helen B Duffield Elementary School
How many students attend Helen B Duffield Elementary School?
Helen B Duffield Elementary School has 313 students enrolled. It is an elementary school in Ronkonkoma, NY.
What is the student-teacher ratio at Helen B Duffield Elementary School?
The student-teacher ratio at Helen B Duffield Elementary School is 10.8:1, which is 8% lower than the New York average of 11.8:1 and 31% 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 Helen B Duffield Elementary School?
29.8% of students at Helen B Duffield Elementary School are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Helen B Duffield Elementary School?
The largest demographic group at Helen B Duffield Elementary School is White at 50.5% of enrollment, in Ronkonkoma, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 65.1/100.
What is the Resource Investment Index for Helen B Duffield Elementary School?
Helen B Duffield Elementary School has a Resource Investment Index of 39/100 (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 Helen B Duffield Elementary School rank among public schools in Ronkonkoma?
By Resource Investment Index, Helen B Duffield Elementary School ranks #3 of 4 public schools in Ronkonkoma, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Ronkonkoma on the city page.
Is Helen B Duffield Elementary School a good school?
Helen B Duffield Elementary School earns 39/100 on the Resource Investment Index, with class sizes near the New York 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 Connetquot Central School District?
Besides Helen B Duffield Elementary School, Connetquot Central School District also operates Connetquot High School (1,774 students), Ronkonkoma Middle School (641 students), and Cherokee Street Elementary School (618 students). See the Connetquot Central 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.