Enrollment
277
New York · 2024-25 NCES data
High school (grades 9-12) · Williamson, NY
Williamson Senior High School
Federal NCES profile for Williamson Senior High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 43/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 363144004206
👥 S:T ratio 65
📚 AP courses 10
🌟 Gifted program 30
🎓 Counselors 82
📋 Attendance 29
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Williamson Senior High School earns 43/100 on the Resource Investment Index, with class sizes smaller than 85% of New York schools.
- #2 of 3
- public schools in Williamson · Resource Index
- 43
- Resource Index · Typical
- 8.7:1
- small classes for New York
- 50.2%
- free-lunch eligible
Williamson Senior High School has class sizes smaller than 85% of New York schools. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Williamson Senior High School ranks #2 of 3 public schools in Williamson, NY.
School address
District: Williamson Central School District · New York
NCES ID 363144004206 Verify on NCES CCD record →
Teachers (FTE)
32.0
Federal CCD staff survey
Students per teacher
8.7:1
vs 11.8:1 New York avg
-26% vs state
Free-lunch eligible
50.2%
vs 56.2% New York avg
-11% vs state
Student-teacher ratio in context
How Williamson Senior High School compares with New York and U.S. medians
What stands out at Williamson Senior High School
Williamson Senior High School is a higher-need, mid-sized high school in Williamson, New York, enrolling 277 students.
Classes run notably small here: at 8.7:1, Williamson Senior High School is leaner than roughly 85% of New York schools and 26% under the state's 11.8:1 norm, more adult attention per pupil than most peers.
Its free-meal eligibility rate of 50.2% lands close to the New York typical range, neither a high- nor low-need campus by this measure.
Enrollment of 277 puts it in the smaller third of New York schools by headcount.
Its Resource Investment Index lands in the upper third of 4,801 scored New York schools.
Against 593 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #70.
Its student body is led by White (78%) and Hispanic or Latino (10%) (diversity index 37/100).
On the academic-pipeline side it reports 2 Advanced Placement courses.
Counselor coverage is strong, about 92 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 28.5% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Williamson Central School District also operates Williamson Elementary School (396 students) and Williamson Middle School (270 students) alongside Williamson 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 Williamson Senior High School compares
Williamson 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 | 8.7:1 | ▼ 26% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 50.2% | ▼ 11% | 56.2% | 51.7% |
| Enrollment | 277 | top 80% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
8.7:1
Leaner classes than 93% of US schools, among the more generously staffed nationally.
277
Bigger than 29% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
50.2%
free-lunch eligible
- 11% below 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
8.7:1
students per teacher
- 26% below state mean
Top 15% in New York - lower ratio than 85% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
28.5%
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
$22,376
per pupil, district-wide
- below 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
Counselors3.0 FTE
Per 92 students, the combined health-and-guidance staffing load for this school.
Discipline context
30
in-school suspensions + 13 out-of-school
Suspension rate: 10.8 per 100 students. Combined in-school and out-of-school rate: 15.5 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 78.3%
Hispanic or Latino 10.1%
Two or More 6.1%
African American 4.3%
American Indian / Alaska Native 0.7%
Asian 0.4%
Largest group: White at 78.3% of enrollment.
Student-body diversity index 37.1/100
Simpson diversity index - at 37.1, Williamson Senior High School is less mixed than the New York school average of 45.5.
Programs
AP courses offered 2
Funding & spending
District-wide per-pupil expenditure for Williamson Central School District, which includes Williamson Senior High School.
$22,376
Per student
-15%
vs New York
Avg $26,410
+35%
vs U.S.
Avg $16,593
Revenue mix
Local 38.4%
State 47.1%
Federal 14.5%
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 Williamson Senior High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Williamson Elementary School | Larger | Similar economic need | Higher S:T ratio |
| Williamson Middle School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Williamson Senior High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 396
- Students per teacher
- 12:1
- Resource Index
- 53/100
- Enrollment
- 270
- Students per teacher
- 7.9:1
- Resource Index
- 49/100
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 (~277 students)
Next steps
Verify locally before acting on Williamson Senior High School's federal record.
- Compare Williamson Senior High School against another school. Compare schools
- Williamson 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 Williamson Senior High School
How many students attend Williamson Senior High School?
Williamson Senior High School has 277 students enrolled. It is a high school in Williamson, NY.
What is the student-teacher ratio at Williamson Senior High School?
The student-teacher ratio at Williamson Senior High School is 8.7:1, which is 26% lower than the New York average of 11.8:1 and 45% 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 Williamson Senior High School?
50.2% of students at Williamson 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 Williamson Senior High School?
The largest demographic group at Williamson Senior High School is White at 78.3% of enrollment, in Williamson, NY.
What is the Resource Investment Index for Williamson Senior High School?
Williamson Senior High School has a Resource Investment Index of 43/100 (typical 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 Williamson Senior High School rank among public schools in Williamson?
By Resource Investment Index, Williamson Senior High School ranks #2 of 3 public schools in Williamson, 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 Williamson on the city page.
Is Williamson Senior High School a good school?
Williamson Senior High School earns 43/100 on the Resource Investment Index, with class sizes smaller than 85% of New York schools. 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 Williamson Central School District?
Besides Williamson Senior High School, Williamson Central School District also operates Williamson Elementary School (396 students) and Williamson Middle School (270 students). See the Williamson 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.