- Enrollment
- 2,008
- Students per teacher
- 12:1
- Resource Index
- 51/100
Middle school (grades 6-8) · Holbrook, NY
Seneca Middle School
Federal NCES profile for Seneca Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 362535003509
👥 S:T ratio 55
🌟 Gifted program 30
🎓 Counselors 38
📋 Attendance 47
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Seneca Middle School earns 42/100 on the Resource Investment Index, with class sizes near the New York median.
- #3 of 5
- public schools in Holbrook · Resource Index
- 42
- Resource Index · Typical
- 11.3:1
- students per teacher
- 20.3%
- free-lunch eligible
Seneca Middle School has class sizes near the New York median. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Seneca Middle School ranks #3 of 5 public schools in Holbrook, NY.
School address
District: Sachem Central School District · New York
NCES ID 362535003509 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+1 students YoY
Seneca Middle School held near 974 students from 2022-23 to 2023-24 (+1 headcount).
Teacher FTE added 82.5 → 87.7 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+1 students YoY 362535003509 · Holbrook, NY Middle · MID · TRAD
928 enr · 11.3:1 · 20.3% lunch · RII 42
Nearest enrollment peer: Sachem High School North (2,008 students)
Seneca Middle School held near 974 students from 2022-23 to 2023-24 (+1 headcount). Teacher FTE added 82.5 → 87.7 across the same CCD years. Read with this school → · District book → · New York schools → · Find another →
Seneca Middle School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Sachem High Sc
Sachem High School North
2,008 students
- Sachem High Sc
Sachem High School East
1,984 students
- This school
Seneca Middle School
928 students
- Sagamore Middl
Sagamore Middle School
893 students
- Samoset Middle
Samoset Middle School
847 students
- Lynwood Avenue 561
Lynwood Avenue School
561 students
What this shows Seneca Middle School reports 928 students on the CCD universe file.
How Seneca Middle School compares
Seneca Middle 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 | 11.3:1 | ▼ 4% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 20.3% | ▼ 64% | 56.2% | 51.7% |
| Enrollment | 928 | top 10% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.3:1
Leaner classes than 81% of US schools, among the more generously staffed nationally.
928
Bigger than 90% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
20.3%
free-lunch eligible
- 64% 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
11.3:1
students per teacher
- 4% below state mean
Top 49% in New York - lower ratio than 51% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
21.3%
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
$29,213
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
Counselors3.0 FTE
Per 309 students, the combined health-and-guidance staffing load for this school.
Discipline context
79
in-school suspensions + 34 out-of-school
Suspension rate: 8.5 per 100 students. Combined in-school and out-of-school rate: 12.2 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 64.3%
Hispanic or Latino 22.1%
Asian 5.7%
Two or More 4.4%
African American 3.3%
American Indian / Alaska Native 0.1%
Largest group: White at 64.3% of enrollment.
Student-body diversity index 53.1/100
Simpson diversity index - at 53.1, Seneca Middle School is more mixed than the New York school average of 45.5.
Programs
District finance for Sachem Central School District reports $29,213 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Seneca Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Sachem High School North | Larger | Similar economic need | Similar S:T ratio |
| Sachem High School East | Larger | Similar economic need | Similar S:T ratio |
| Sagamore Middle School | Similar size | Similar economic need | Similar S:T ratio |
| Samoset Middle School | Similar size | Similar economic need | Similar S:T ratio |
| Lynwood Avenue School | Smaller | Higher economic need | Higher S:T ratio |
Comparisons are relative to Seneca Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,984
- Students per teacher
- 11.3:1
- Resource Index
- 50/100
- Enrollment
- 893
- Students per teacher
- 11:1
- Resource Index
- 41/100
- Enrollment
- 847
- Students per teacher
- 10.2:1
- Resource Index
- 44/100
- Enrollment
- 561
- Students per teacher
- 13.4:1
- Resource Index
- 36/100
Nationwide middle 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 (~928 students)
Similar student-teacher ratio (~11.3:1)
Frequently asked questions about Seneca Middle School
How many students attend Seneca Middle School?
Seneca Middle School has 928 students enrolled. It is a middle school in Holbrook, NY. CCD year-over-year: 973 (2022-23) → 974 (2023-24), nearly flat (+1).
What is the student-teacher ratio at Seneca Middle School?
The student-teacher ratio at Seneca Middle School is 11.3:1, which is 4% lower than the New York average of 11.8:1 and 28% 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 Seneca Middle School?
20.3% of students at Seneca Middle School are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Seneca Middle School?
The largest demographic group at Seneca Middle School is White at 64.3% of enrollment, in Holbrook, NY. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 53.1/100.
What is the Resource Investment Index for Seneca Middle School?
Seneca Middle School has a Resource Investment Index of 42/100 (typical 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 Seneca Middle School rank among public schools in Holbrook?
By Resource Investment Index, Seneca Middle School ranks #3 of 5 public schools in Holbrook, 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 Holbrook on the city page.
What other schools are in Sachem Central School District?
Besides Seneca Middle School, Sachem Central School District also operates Sachem High School North (2,008 students), Sachem High School East (1,984 students), and Sagamore Middle School (893 students). See the Sachem Central School District district page for the complete list.