Enrollment
790
New York · 2024-25 NCES data
Elementary school (grades K-5) · Williamsville, NY
Mill Middle School
Federal NCES profile for Mill Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 60/100.
2024-25 NCES dataElementary school (grades K-5)NCES 363147004216
👥 S:T ratio 57
🌟 Gifted program 70
🎓 Counselors 61
📋 Attendance 54
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mill Middle School earns 60/100 on the Resource Investment Index, with class sizes near the New York median.
- #2 of 7
- elementary schools in Williamsville · Resource Index
- 60
- Resource Index · Higher
- 10.7:1
- students per teacher
- 24.2%
- free-lunch eligible
Mill Middle School has class sizes near the New York median. Computed live against every New York school reporting to NCES.
By Resource Investment Index, Mill Middle School ranks #2 of 7 elementary schools in Williamsville, NY.
School address
District: Williamsville Central School District · New York
NCES ID 363147004216 Verify on NCES CCD record →
Teachers (FTE)
74.0
Federal CCD staff survey
Students per teacher
10.7:1
vs 11.8:1 New York avg
-9% vs state
Free-lunch eligible
24.2%
vs 56.2% New York avg
-57% vs state
Student-teacher ratio in context
How Mill Middle School compares with New York and U.S. medians
What stands out at Mill Middle School
Mill Middle School is a large elementary school in Williamsville, New York, enrolling 790 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.
Economic need runs somewhat below the state's typical profile, with 24.2% of students eligible for free meals.
Enrollment of 790 puts it in the larger third of New York schools by headcount.
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 527 similarly sized, similarly resourced-need New York schools statewide, it ranks #24, a top-tier result once campus size and economic need are matched.
Its student body is led by White (76%) and Asian (10%) (diversity index 41/100).
Counselor coverage is strong, about 198 students per counselor, inside the American School Counselor Association's recommended 250:1.
Attendance runs somewhat below the norm, with 18.5% of students chronically absent per the 2021-22 civil-rights 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 Mill Middle 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 Mill Middle School compares
Mill Middle 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 | 24.2% | ▼ 57% | 56.2% | 51.7% |
| Enrollment | 790 | top 14% | - | - |
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.
790
Bigger than 85% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
24.2%
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
10.7:1
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
18.5%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
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 198 students, the combined health-and-guidance staffing load for this school.
Discipline context
49
in-school suspensions + 25 out-of-school
Suspension rate: 6.2 per 100 students. Combined in-school and out-of-school rate: 9.4 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 76.1%
Asian 9.5%
Hispanic or Latino 5.6%
African American 4.6%
Two or More 4.3%
Largest group: White at 76.1% of enrollment.
Student-body diversity index 40.5/100
Simpson diversity index - at 40.5, Mill Middle School is less mixed than the New York school average of 45.5.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Williamsville Central School District, which includes Mill Middle 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 Mill Middle 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 | Higher S:T ratio |
| Williamsville South High 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 Mill Middle 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
- 796
- Students per teacher
- 10.9:1
- Resource Index
- 42/100
- Enrollment
- 670
- Students per teacher
- 11.8:1
- Resource Index
- 58/100
Similar elementary 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 (~790 students)
Next steps
Verify locally before acting on Mill Middle School's federal record.
- Compare Mill Middle 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 Mill Middle School
How many students attend Mill Middle School?
Mill Middle School has 790 students enrolled. It is an elementary school in Williamsville, NY.
What is the student-teacher ratio at Mill Middle School?
The student-teacher ratio at Mill Middle 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 Mill Middle School?
24.2% of students at Mill Middle School are eligible for free lunch, compared to the New York average of 56.2%.
What is the racial and ethnic makeup of Mill Middle School?
The largest demographic group at Mill Middle School is White at 76.1% of enrollment, in Williamsville, NY.
What is the Resource Investment Index for Mill Middle School?
Mill Middle School has a Resource Investment Index of 60/100 (higher reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mill Middle School rank among elementary schools in Williamsville?
By Resource Investment Index, Mill Middle School ranks #2 of 7 elementary 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 elementary schools in Williamsville on the city page.
Is Mill Middle School a good school?
Mill Middle School earns 60/100 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 Mill Middle 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.