Enrollment
2,400
New York · 2024-25 NCES data
High school (grades 9-12) · Syosset, NY
Syosset Senior High School
Federal NCES profile for Syosset Senior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 67/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 362856003843
👥 S:T ratio 57
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 60
📋 Attendance 89
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Syosset Senior High School earns 67/100 on the Resource Investment Index, with class sizes near the New York median. It is also one of the largest schools in New York.
- #6 of 10
- public schools in Syosset · Resource Index
- 67
- Resource Index · Higher
- 10.7:1
- students per teacher
- 11.6%
- free-lunch eligible
Syosset Senior High School has class sizes near the New York median. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Syosset Senior High School ranks #6 of 10 public schools in Syosset, NY.
School address
District: Syosset Central School District · New York
NCES ID 362856003843 Verify on NCES CCD record →
Teachers (FTE)
224.0
Federal CCD staff survey
Students per teacher
10.7:1
vs 11.8:1 New York avg
-9% vs state
Free-lunch eligible
11.6%
vs 56.2% New York avg
-79% vs state
Student-teacher ratio in context
How Syosset Senior High School compares with New York and U.S. medians
What stands out at Syosset Senior High School
Syosset Senior High School is a lower-poverty, large high school in Syosset, New York, enrolling 2,400 students.
Class sizes run a bit leaner than typical: 10.7:1 puts it in the smaller third of New York schools by student-teacher ratio.
Comparatively few students face economic hardship here, 11.6% free-meal eligibility runs 79% below the New York average.
By headcount it is one of the larger campuses in New York, bigger than 99% of state schools at 2,400 students.
Its Resource Investment Index outscores 94% of the 4,801 New York schools with a score on record, a top-tier result on this measure.
Among 27 similarly sized, similarly resourced-need New York schools statewide, it ranks #2, a top-tier result once campus size and economic need are matched.
Its student body is led by Asian (50%) and White (42%) (diversity index 57/100).
On the academic-pipeline side it reports 30 Advanced Placement courses.
Counselor coverage is strong, about 200 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance holds up well here: only 4.2% of students were chronically absent, below the typical post-pandemic national figure.
The surrounding Syosset Central School District spends $34,257 per pupil, 30% above the New York average, a better-resourced district than most.
Syosset Central School District also operates H B Thompson Middle School (951 students) and South Woods Middle School (802 students) alongside Syosset Senior High 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 Syosset Senior High School compares
Syosset Senior High 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 | 10.7:1 | ▼ 9% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 11.6% | ▼ 79% | 56.2% | 51.7% |
| Enrollment | 2,400 | top 1% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.7:1
Leaner classes than 85% of US schools, among the more generously staffed nationally.
2,400
Bigger than 99% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
11.6%
free-lunch eligible
- 79% below the New York average of 56.2%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
10.7:1
students per teacher
- 9% below state mean
Top 40% in New York - lower ratio than 60% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
4.2%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$34,257
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
Counselors12.0 FTE
Per 200 students, the combined health-and-guidance staffing load for this school.
Discipline context
58
in-school suspensions + 21 out-of-school
Suspension rate: 2.4 per 100 students. Combined in-school and out-of-school rate: 3.3 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
Asian 50.2%
White 42.1%
Hispanic or Latino 4.9%
Two or More 2.1%
African American 0.5%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
Largest group: Asian at 50.2% of enrollment.
Student-body diversity index 56.8/100
Simpson diversity index - at 56.8, Syosset Senior High School is more mixed than the New York school average of 45.5.
Programs
AP courses offered 30
Funding & spending
District-wide per-pupil expenditure for Syosset Central School District, which includes Syosset Senior High School.
$34,257
Per student
+30%
vs New York
Avg $26,410
+106%
vs U.S.
Avg $16,593
Revenue mix
Local 85.4%
State 11.4%
Federal 3.2%
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 Syosset Senior High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| H B Thompson Middle School | Smaller | Similar economic need | Similar S:T ratio |
| South Woods Middle School | Smaller | Similar economic need | Similar S:T ratio |
| Robbins Lane Elementary School | Smaller | Similar economic need | Similar S:T ratio |
| Berry Hill Elementary School | Smaller | Similar economic need | Similar S:T ratio |
| South Grove Elementary School | Smaller | Similar economic need | Similar S:T ratio |
Comparisons are relative to Syosset Senior High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 951
- Students per teacher
- 9.6:1
- Resource Index
- 55/100
- Enrollment
- 802
- Students per teacher
- 9.8:1
- Resource Index
- 56/100
- Enrollment
- 460
- Students per teacher
- 10:1
- Resource Index
- 70/100
- Enrollment
- 450
- Students per teacher
- 11.8:1
- Resource Index
- 71/100
- Enrollment
- 433
- Students per teacher
- 11.4:1
- Resource Index
- 71/100
Similar high 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 (~2,400 students)
Next steps
Verify locally before acting on Syosset Senior High School's federal record.
- Compare Syosset Senior High School against another school. Compare schools
- Syosset 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 Syosset Senior High School
How many students attend Syosset Senior High School?
Syosset Senior High School has 2,400 students enrolled. It is a high school in Syosset, NY.
What is the student-teacher ratio at Syosset Senior High School?
The student-teacher ratio at Syosset Senior High School is 10.7:1, which is 9% lower than the New York average of 11.8:1 and 32% 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 Syosset Senior High School?
11.6% of students at Syosset Senior High School are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Syosset Senior High School?
The largest demographic group at Syosset Senior High School is Asian at 50.2% of enrollment, in Syosset, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 56.8/100.
What is the Resource Investment Index for Syosset Senior High School?
Syosset Senior High School has a Resource Investment Index of 67/100 (higher reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Syosset Senior High School rank among public schools in Syosset?
By Resource Investment Index, Syosset Senior High School ranks #6 of 10 public schools in Syosset, 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 Syosset on the city page.
Is Syosset Senior High School a good school?
Syosset Senior High School earns 67/100 on the Resource Investment Index, with class sizes near the New York median. It is also one of the largest schools in New York. 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 Syosset Central School District?
Besides Syosset Senior High School, Syosset Central School District also operates H B Thompson Middle School (951 students), South Woods Middle School (802 students), and Robbins Lane Elementary School (460 students). See the Syosset 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.