Robert M Grable Jr Mount Sinai High School
Mount Sinai, NY · Mount Sinai Union Free School District
Regular public school · Grades 9-12 · Suburb, large
14th of 1,137 New York high schools statewide · better than 99%· Stable
110 N COUNTRY RD, Mount Sinai, NY 11766
(631)870-2800NCES ID 362004004827Directory 2023–24
SchoolRow ranks Robert M Grable Jr Mount Sinai High School 14th of 1,137 New York high schools for 2024–25, based on NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate English and Math results — better than 99% of high schools statewide. Its statewide percentile went from 95th in 2022 to 99th in 2025.
Percent meeting or exceeding the state standard, NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate
Racial and ethnic breakdown of 700 students (2023–24, NCES) — history since 1991, with comparable seven-category changes from 2010
| Group | Trend | 2010 | 2023 | Change |
|---|---|---|---|---|
| White | 91.2% | 75.1% | ▼ 16.1 pts | |
| Hispanic | 1.9% | 13.9% | ▲ 12.0 pts | |
| Asian | 4.8% | 8.0% | ▲ 3.2 pts | |
| Black | 2.0% | 1.7% | ▼ 0.3 pts | |
| Two or more races | 0.0% | 1.3% | ▲ 1.3 pts |
NCES history for this school begins in 1991. 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 $762K in zip 11766 as of 2026-05 · trend since 2000
Data Provided by Zillow Group
Closest same-level schools, with 2024–25 state rank · ▲▼ = points better or worse than Robert M Grable Jr Mount Sinai High School
- #138Miller Place High SchoolMiller Place Union Free School District · 2 mi away138th of 1,137
ELA 92% ▼5 · Math 76% ▼21Compare - #237Comsewogue High SchoolBrookhaven-Comsewogue Union Free School District · 2.2 mi away237th of 1,137
ELA 91% ▼6 · Math 64% ▼33Compare - #108Earl L Vandermeulen High SchoolPort Jefferson Union Free School District · 2.2 mi away108th of 1,137
ELA 94% ▼3 · Math 78% ▼19Compare - #283Ward Melville Senior High SchoolThree Village Central School District · 3 mi away283rd of 1,137
ELA 94% ▼3 · Math 56% ▼41Compare - #182Rocky Point High SchoolRocky Point Union Free School District · 4.4 mi away182nd of 1,137
ELA 90% ▼7 · Math 71% ▼26Compare - #515Newfield High SchoolMiddle Country Central School District · 5 mi away515th of 1,137
ELA 87% ▼10 · Math 36% ▼61Compare - #439Centereach High SchoolMiddle Country Central School District · 5.5 mi away439th of 1,137
ELA 86% ▼11 · Math 45% ▼52Compare - #289Sachem High School EastSachem Central School District · 6.6 mi away289th of 1,137
ELA 89% ▼8 · Math 61% ▼36Compare
What school district is Robert M Grable Jr Mount Sinai High School in?
Robert M Grable Jr Mount Sinai High School is part of the Mount Sinai Union Free School District district in Mount Sinai, New York.
Is Robert M Grable Jr Mount Sinai High School a good school?
SchoolRow ranks Robert M Grable Jr Mount Sinai High School 14th of 1,137 New York high schools (better than 99% statewide) based on 2024–25 test results (NYSED 3-8 assessments 2024–25; high schools: Regents 65+ rate).
What is the racial makeup of Robert M Grable Jr Mount Sinai High School?
White 75%, Hispanic 14%, Asian 8%, Black 2% (700 students, 2023–24).
How much do homes near Robert M Grable Jr Mount Sinai High School cost?
The typical home value in zip code 11766 is $762K 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.