ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL

www.mtsinai.k12.ny.us

710 Students

High School 9th - 12th

School Overview

Mount Sinai High School, located in Mount Sinai, New York, is the sole high school within the Mount Sinai Union Free School District. Known for its strong academic focus and supportive community environment, the school serves students in grades 9 through 12. It consistently ranks as one of the top-performing schools in Suffolk County, placing a heavy emphasis on college readiness, rigorous coursework, and a wide variety of Advanced Placement (AP) opportunities.

Beyond its academic curriculum, Mount Sinai High School is recognized for its comprehensive extracurricular program, which includes competitive athletics, championship-caliber robotics teams, and diverse fine arts offerings. The school prides itself on fostering a "small-town" atmosphere despite its academic scale, encouraging active parent involvement and student leadership. Its location on the North Shore of Long Island allows the district to maintain a close-knit culture that prioritizes student well-being, character development, and long-term academic success.

710

Total Students

65.0

Full-Time Teachers

10.9

Student/Teacher Ratio

12.3%

Free/Reduced Lunch

Student Demographics

Student Demographics Data Table

Student Demographics for ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL
Demographic	Student Count
White	524
Hispanic	100
Black	9
Asian	63
Two or More	13
Pacific Islander	1

White
524 (73.8%)
Hispanic
100 (14.1%)
Asian
63 (8.9%)
Two or More
13 (1.8%)
Black
9 (1.3%)
Pacific Islander
1 (0.1%)

School Location

School Details

Status:	Open
School Level:	High School
School Type:	Regular School
Charter Status:*	Public Non-Charter
Virtual Instruction:	No virtual instruction
Shared Time Status:	No
District:	MOUNT SINAI UNION FREE SCHOOL DISTRICT
Phone:	(631)870-2800
Website:	http://www.mtsinai.k12.ny.us
Grade Range:	9th - 12th
Total Students:	710
Full-Time Teachers (FTE):	65.0
Pupil/Teacher Ratio:	10.9
NSLP Participation:¹	Yes participating without using any Provision or the CEO
Qualified Free Lunch:	86
Qualified Reduced Lunch:	1

* Charter Schools: A public charter school is a publicly funded school that operates independently under a legislative contract (or "charter") with a state, school district, or designated authorizing entity. Charters grant these schools greater operational flexibility over curriculum, staffing, and budgeting in exchange for strict accountability to achieve performance standards established in their charter agreement.

¹ National School Lunch Program (NSLP): The National School Lunch Program is a federally assisted meal program operating in public and nonprofit private schools. It provides nutritionally balanced, low-cost or free lunches to eligible children each school day based on household income thresholds or community eligibility options (CEO).

Title I Program Overview: Title I, Part A of the Elementary and Secondary Education Act (ESEA) allocates federal financial assistance to local educational agencies and public schools with high percentages of children from low-income families to help ensure that all children meet challenging state academic standards.

Grades Taught

Grade 9 194

Grade 10 157

Grade 11 161

Grade 12 193

Ungraded 5