Enrollment
490
New York · 2024-25 NCES data
Elementary school (grades K-5) · Central Islip, NY
Cordello Avenue Elementary School
Federal NCES profile for Cordello Avenue Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 27/100.
2024-25 NCES dataElementary school (grades K-5)NCES 360687004253
👥 S:T ratio 51
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Cordello Avenue Elementary School earns 27/100 on the Resource Investment Index, with class sizes near the New York median.
- #1 of 4
- elementary schools in Central Islip · Resource Index
- 27
- Resource Index · Lower
- 12.3:1
- students per teacher
- 80.7%
- free-lunch eligible
Cordello Avenue Elementary School has class sizes near the New York median. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Cordello Avenue Elementary School ranks #1 of 4 elementary schools in Central Islip, NY.
School address
District: Central Islip Union Free School District · New York
NCES ID 360687004253 Verify on NCES CCD record →
Teachers (FTE)
40.0
Federal CCD staff survey
Students per teacher
12.3:1
vs 11.8:1 New York avg
+4% vs state
Free-lunch eligible
80.7%
vs 56.2% New York avg
+44% vs state
Student-teacher ratio in context
How Cordello Avenue Elementary School compares with New York and U.S. medians
What stands out at Cordello Avenue Elementary School
Cordello Avenue Elementary School is a high-poverty, mid-sized elementary school in Central Islip, New York, enrolling 490 students.
Class loads run somewhat heavier than typical: 12.3:1 puts it in the larger third of New York schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 80.7% of students eligible for free meals.
With 490 students, its enrollment sits close to the New York median campus size.
Its Resource Investment Index lands in the lower third of 4,801 scored New York schools.
Against 980 statewide peers matched on enrollment and economic need, it ranks mid-pack at #528.
Its student body is predominantly Hispanic or Latino (86% of enrollment) (diversity index 25/100).
Chronic absenteeism is elevated: 42.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Central Islip Union Free School District also operates Central Islip Senior High School (2,615 students) and Ralph Reed School (1,192 students) alongside Cordello Avenue 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 Cordello Avenue Elementary School compares
Cordello Avenue 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 | 12.3:1 | ▲ 4% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 80.7% | ▲ 44% | 56.2% | 51.7% |
| Enrollment | 490 | top 39% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.3:1
Leaner classes than 73% of US schools, among the more generously staffed nationally.
490
Bigger than 60% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
80.7%
free-lunch eligible
- 44% above the New York average of 56.2%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
12.3:1
students per teacher
- 4% above state mean
Top 64% in New York - lower ratio than 36% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
42.0%
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
$28,339
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
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
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
Hispanic or Latino 85.9%
African American 11.2%
Two or More 1.0%
White 0.8%
Asian 0.6%
American Indian / Alaska Native 0.4%
Largest group: Hispanic or Latino at 85.9% of enrollment.
Student-body diversity index 24.9/100
Simpson diversity index - at 24.9, Cordello Avenue Elementary School is less mixed than the New York school average of 45.5.
Programs
Funding & spending
District-wide per-pupil expenditure for Central Islip Union Free School District, which includes Cordello Avenue Elementary School.
$28,339
Per student
+7%
vs New York
Avg $26,410
+71%
vs U.S.
Avg $16,593
Revenue mix
Local 37.5%
State 53.6%
Federal 8.9%
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 Cordello Avenue Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Central Islip Senior High School | Larger | Similar economic need | Higher S:T ratio |
| Ralph Reed School | Larger | Similar economic need | Higher S:T ratio |
| Charles a Mulligan Elementary School | Larger | Similar economic need | Higher S:T ratio |
| Andrew T Morrow School | Larger | Similar economic need | Higher S:T ratio |
| Francis J O'neill School | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Cordello Avenue Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,615
- Students per teacher
- 17.8:1
- Resource Index
- 41/100
- Enrollment
- 1,192
- Students per teacher
- 14.5:1
- Resource Index
- 23/100
- Enrollment
- 997
- Students per teacher
- 15.3:1
- Resource Index
- 23/100
- Enrollment
- 821
- Students per teacher
- 13.9:1
- Resource Index
- 25/100
- Enrollment
- 600
- Students per teacher
- 14.3:1
- Resource Index
- 25/100
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 (~490 students)
Next steps
Verify locally before acting on Cordello Avenue Elementary School's federal record.
- Compare Cordello Avenue Elementary School against another school. Compare schools
- Central Islip Union Free 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 Cordello Avenue Elementary School
How many students attend Cordello Avenue Elementary School?
Cordello Avenue Elementary School has 490 students enrolled. It is an elementary school in Central Islip, NY.
What is the student-teacher ratio at Cordello Avenue Elementary School?
The student-teacher ratio at Cordello Avenue Elementary School is 12.3:1, which is 4% higher than the New York average of 11.8:1 and 22% lower than the national average of 15.7:1.
What percentage of students receive free lunch at Cordello Avenue Elementary School?
80.7% of students at Cordello Avenue Elementary School are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Cordello Avenue Elementary School?
The largest demographic group at Cordello Avenue Elementary School is Hispanic or Latino at 85.9% of enrollment, in Central Islip, NY.
What is the Resource Investment Index for Cordello Avenue Elementary School?
Cordello Avenue Elementary School has a Resource Investment Index of 27/100 (lower reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Cordello Avenue Elementary School rank among elementary schools in Central Islip?
By Resource Investment Index, Cordello Avenue Elementary School ranks #1 of 4 elementary schools in Central Islip, NY. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Central Islip on the city page.
Is Cordello Avenue Elementary School a good school?
Cordello Avenue Elementary School earns 27/100 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 Central Islip Union Free School District?
Besides Cordello Avenue Elementary School, Central Islip Union Free School District also operates Central Islip Senior High School (2,615 students), Ralph Reed School (1,192 students), and Charles a Mulligan Elementary School (997 students). See the Central Islip Union Free School District district page for the complete list.
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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.