ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL

www.mtsinai.k12.ny.us

720 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.

720

Total Students

61.5

Full-Time Teachers

11.7

Student/Teacher Ratio

12.1%

Free/Reduced Lunch

Student Demographics

Student Demographics Data Table

Student Demographics for ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL
Demographic	Student Count
White	554
Hispanic	86
Black	11
Asian	58
Two or More	10

White
554 (77.1 %)
Hispanic
86 (12.0 %)
Asian
58 (8.1 %)
Black
11 (1.5 %)
Two or More
10 (1.4 %)

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:	720
Full-Time Teachers (FTE):	61.5
Pupil/Teacher Ratio:	11.7
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 9 170

Grade 10 192

Grade 11 172

Grade 12 186