Enrollment
796
New York · 2024-25 NCES data
High school (grades 9-12) · Williamsville, NY
Williamsville South High School
Federal NCES profile for Williamsville South High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 47/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 363147004219
👥 S:T ratio 56
📚 AP courses 65
🌟 Gifted program 30
🎓 Counselors 60
📋 Attendance 22
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Williamsville South High School earns 47/100 on the Resource Investment Index, with class sizes near the New York median.
- #10 of 11
- public schools in Williamsville · Resource Index
- 47
- Resource Index · Typical
- 10.9:1
- students per teacher
- 24.3%
- free-lunch eligible
Williamsville South High School has class sizes near the New York median. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Williamsville South High School ranks #10 of 11 public schools in Williamsville, NY.
School address
District: Williamsville Central School District · New York
NCES ID 363147004219 Verify on NCES CCD record →
Teachers (FTE)
73.0
Federal CCD staff survey
Students per teacher
10.9:1
vs 11.8:1 New York avg
-8% vs state
Free-lunch eligible
24.3%
vs 56.2% New York avg
-57% vs state
Student-teacher ratio in context
How Williamsville South High School compares with New York and U.S. medians
What stands out at Williamsville South High School
Williamsville South High School is a large high school in Williamsville, New York, enrolling 796 students.
At 10.9:1, its student-teacher ratio sits close to the New York median, within a few percentage points of the 11.8:1 state norm, neither notably crowded nor notably small.
Economic need runs somewhat below the state's typical profile, with 24.3% of students eligible for free meals.
Enrollment of 796 puts it in the larger third of New York schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 4,801 scored New York schools.
Against 522 statewide peers matched on enrollment and economic need, it ranks mid-pack at #319.
Its student body is led by White (74%) and Asian (8%) (diversity index 43/100).
On the academic-pipeline side it reports 13 Advanced Placement courses.
Counselor coverage is strong, about 199 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 31.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Williamsville Central School District spends $19,132 per pupil, 28% below the New York average, a leaner-resourced district than most.
Williamsville Central School District also operates Williamsville North High School (1,307 students) and Williamsville East High School (940 students) alongside Williamsville South 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 Williamsville South High School compares
Williamsville South 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 | 10.9:1 | ▼ 8% | 11.8:1 | 15.7:1 |
| Free-lunch eligible | 24.3% | ▼ 57% | 56.2% | 51.7% |
| Enrollment | 796 | top 14% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
10.9:1
Leaner classes than 84% of US schools, among the more generously staffed nationally.
796
Bigger than 85% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
24.3%
free-lunch eligible
- 57% 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
10.9:1
students per teacher
- 8% below state mean
Top 43% in New York - lower ratio than 57% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
31.4%
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
$19,132
per pupil, district-wide
- below New York avg of $26,410
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors4.0 FTE
Per 199 students, the combined health-and-guidance staffing load for this school.
Discipline context
46
in-school suspensions + 58 out-of-school
Suspension rate: 5.8 per 100 students. Combined in-school and out-of-school rate: 13.1 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 74.2%
Asian 8.4%
African American 6.5%
Two or More 5.7%
Hispanic or Latino 4.8%
Native Hawaiian / Pacific Islander 0.4%
Largest group: White at 74.2% of enrollment.
Student-body diversity index 43.3/100
Simpson diversity index - at 43.3, Williamsville South High School is less mixed than the New York school average of 45.5.
Programs
AP courses offered 13
Funding & spending
District-wide per-pupil expenditure for Williamsville Central School District, which includes Williamsville South High School.
$19,132
Per student
-28%
vs New York
Avg $26,410
+15%
vs U.S.
Avg $16,593
Revenue mix
Local 66.8%
State 26.6%
Federal 6.6%
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 Williamsville South High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Williamsville North High School | Larger | Similar economic need | Similar S:T ratio |
| Williamsville East High School | Similar size | Similar economic need | Similar S:T ratio |
| Transit Middle School | Similar size | Similar economic need | Similar S:T ratio |
| Mill Middle School | Similar size | Similar economic need | Similar S:T ratio |
| Maple West Elementary School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Williamsville South High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,307
- Students per teacher
- 11.5:1
- Resource Index
- 45/100
- Enrollment
- 940
- Students per teacher
- 11.8:1
- Resource Index
- 48/100
- Enrollment
- 912
- Students per teacher
- 12.2:1
- Resource Index
- 60/100
- Enrollment
- 790
- Students per teacher
- 10.7:1
- Resource Index
- 60/100
- Enrollment
- 670
- Students per teacher
- 11.8:1
- Resource Index
- 58/100
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 (~796 students)
Similar student-teacher ratio (~10.9:1)
Next steps
Verify locally before acting on Williamsville South High School's federal record.
- Compare Williamsville South High School against another school. Compare schools
- Williamsville 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 Williamsville South High School
How many students attend Williamsville South High School?
Williamsville South High School has 796 students enrolled. It is a high school in Williamsville, NY.
What is the student-teacher ratio at Williamsville South High School?
The student-teacher ratio at Williamsville South High School is 10.9:1, which is 8% lower than the New York average of 11.8:1 and 31% 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 Williamsville South High School?
24.3% of students at Williamsville South High School are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Williamsville South High School?
The largest demographic group at Williamsville South High School is White at 74.2% of enrollment, in Williamsville, NY.
What is the Resource Investment Index for Williamsville South High School?
Williamsville South High School has a Resource Investment Index of 47/100 (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 Williamsville South High School rank among public schools in Williamsville?
By Resource Investment Index, Williamsville South High School ranks #10 of 11 public schools in Williamsville, 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 Williamsville on the city page.
Is Williamsville South High School a good school?
Williamsville South High School earns 47/100 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 Williamsville Central School District?
Besides Williamsville South High School, Williamsville Central School District also operates Williamsville North High School (1,307 students), Williamsville East High School (940 students), and Transit Middle School (912 students). See the Williamsville 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.