SchoolRow
#151

Mill Middle School

Williamsville, NY · Williamsville Central School District

Regular public school · Grades 5-8 · Suburb, large

151st of 781 New York middle schools statewide · better than 81%· Stable

505 MILL ST, Williamsville, NY 14221

(716)626-8300NCES ID 363147004216Directory 202324

727
Students
2023–24 enrollment
10:1
Student / teacher ratio
27%
Free / reduced-price lunch
low-income indicator
10.5%
Chronically absent
NY average 27%

SchoolRow ranks Mill Middle School 151st of 781 New York middle schools for 2024–25, based on NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate English and Math results — better than 81% of middle schools statewide. Its statewide percentile went from 84th in 2019 to 81th in 2025.

Statewide percentile by year
25%50%75%81%201920202025no testing 2020–21

Percent meeting or exceeding the state standard, NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate

English Language Arts
Mill Middle School
72%
NY average
53%
Math
Mill Middle School
74%
NY average
57%
Science
Mill Middle School
74%
NY average
51%
English Language Arts over time Mill Middle School NY average
25%50%75%72%53%201920202025no testing 2020–21
Math over time Mill Middle School NY average
25%50%75%74%57%201920202025no testing 2020–21

Racial and ethnic breakdown of 727 students (202324, NCES) — history since 1988, with comparable seven-category changes from 2010

White77%8%7%
Hover the pie for details
categories changedWhite 77%Asian 8%92%7%19882023
GroupTrend20102023Change
White82.6%76.9% 5.7 pts
Asian4.8%8.0% 3.2 pts
Black5.4%6.5% 1.1 pts
Two or more races3.4%4.5% 1.1 pts
Hispanic3.6%4.1% 0.5 pts

NCES history for this school begins in 1988. Race categories changed by 2010: earlier data combines Asian and Pacific Islander students and does not consistently identify multiracial students. The chart retains that history, while the change table uses 2010 onward.

Typical home value $424K in zip 14221 as of 2026-05 · trend since 2000

$105K$211K$316K$421K$401K200020052010201520202025

Data Provided by Zillow Group

See recently sold homes in 14221 on Zillow →

Closest same-level schools, with 2024–25 state rank · ▲▼ = points better or worse than Mill Middle School

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What school district is Mill Middle School in?

Mill Middle School is part of the Williamsville Central School District district in Williamsville, New York.

Is Mill Middle School a good school?

SchoolRow ranks Mill Middle School 151st of 781 New York middle schools (better than 81% statewide) based on 2024–25 test results (NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate).

What is the racial makeup of Mill Middle School?

White 77%, Asian 8%, Black 7%, Two or more races 5% (727 students, 2023–24).

How much do homes near Mill Middle School cost?

The typical home value in zip code 14221 is $424K as of 2026-05 (Zillow ZHVI).

Sources: state education department data (NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate, low-income, chronic absenteeism), National Center for Education Statistics via the Urban Institute (enrollment, demographics, staffing), Zillow Group (home values). Rankings are computed by SchoolRow from state English and Math results within grade level; they measure test performance, not everything that makes a school good.