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 59/100.

2024-25 NCES dataHigh school (grades 9-12)NCES 362856003843
Compare schools View district
Compiled from official source data by .
0/100100/10059/100
👥 S:T ratio
57
🌟 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 59/100 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
59
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

Syosset, NY 11791
District: Syosset Central School District · New York

NCES ID 362856003843 Verify on NCES CCD record →

CCD year-over-year · 2022-23 → 2023-24

+104 students YoY

Syosset Senior High School held near 2,370 students from 2022-23 to 2023-24 (+104 headcount).

Teacher FTE added 224.2 → 227.1 across the same CCD years.

Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).

Steady CCD campus

+104 students YoY 362856003843 · Syosset, NY High · LARGE · TRAD

2,400 enr · 10.7:1 · 11.6% lunch · RII 59

Nearest enrollment peer: H B Thompson Middle School (951 students)

Syosset Senior High School held near 2,370 students from 2022-23 to 2023-24 (+104 headcount). Teacher FTE added 224.2 → 227.1 across the same CCD years. Read with this school → · District book → · New York schools → · Find another →

Syosset Senior High School in the enrollment neighbourhood

Fall enrollment among this campus and nearest district peers

students

What this shows Syosset Senior High School reports 2,400 students on the CCD universe file.

Source U.S. Department of Education, NCES Common Core of Data (Public School Universe) As of 2024-25

How Syosset Senior High School compares

Syosset Senior High School held steady on CCD headcount: ratios and free-lunch share vs 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 methodology

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
$35,347
per pupil, district-wide - above New York avg of $28,120
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.

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

District finance for Syosset Central School District reports $35,347 per pupil (NCES F-33) - open the district page for the full revenue mix.

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

Syosset Central School District · 5 sibling schools

View district profile

Nationwide high schools with similar size or staffing

Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.

Similar enrollment (~2,400 students)

Similar student-teacher ratio (~10.7:1)

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. CCD year-over-year: 2,266 (2022-23) → 2,370 (2023-24), nearly flat (+104).

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 59/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. 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.

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.

Read our methodology - how this data is sourced, computed, and verified.

Source: National Center for Education Statistics (NCES) CCD + Public School Universe (2024-25), CRDC (2021-22), F-33 District Finance Survey (FY 2022-23) · 2024-25 Data as of the 2024-25 school year. Coverage from U.S. Department of Education NCES Common Core of Data. Varies by entity type; administrative districts and certain charter networks may report only a subset of fields.

All federal data sources used on this page

Full source list and how we compute each figure: methodology page.

View saved
Compiled from official source data by .