Robert M Grable Jr Mount Sinai High School (Ranked Top 5% for 2026)

( shown in map)

10/

Top 5%

Serving 700 students in grades 9-12, Robert M Grable Jr Mount Sinai High School ranks in the top 5% of all schools in New York for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).

The percentage of students achieving is 80-84% (which is higher than the New York state average of 52%). The percentage of students achieving is ≥95% (which is higher than the New York state average of 49%).

The student-teacher ratio of 12:1 is higher than the New York state level of 11:1.

Minority enrollment is 25% of the student body (majority Hispanic), which is lower than the New York state average of 60% (majority Hispanic).

Quick Facts (2026)

Grades: 9-12
Enrollment: 700 students
Student-Teacher Ratio: 12:1
Minority Enrollment: 25%
: 96% (Top 10% in NY)
: Top 5%
: 80-84% (Top 10%)
: ≥95% (Top 1%)
: 96% (Top 5%)
Source: National Center for Education Statistics (NCES), NY Dept. of Education

<�鶹��ý class="so-dt-title" id="top-rankings">Top Rankings

Robert M Grable Jr Mount Sinai High School ranks among the top 20% of public schools in New York for:

Category

Attribute

Overall Rank

Highest overall rank (Top 5%)

Math Proficiency

Highest math proficiency (Top 10%)

Reading/Language Arts Proficiency

Highest reading/language arts proficiency (Top 1%)

Science Proficiency

Highest science proficiency (Top 5%)

Graduation Rate

Highest graduation rate (Top 10%)

<�鶹��ý class='so-dt-title' id="overview">School Overview

Robert M Grable Jr Mount Sinai High School's student population of 700 students has declined by 7% over five school years.

The teacher population of 60 teachers has stayed relatively flat over five school years.

Grades Offered

Grades 9-12
(Supplemental Virtual)

View Data

Distribution of Students By Grade Trends
Grade	Robert M Grable Jr Mount Sinai High School
9	160
10	170
11	197
12	168
Not Listed	5

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Total Students

700 students

View Data

Total Students Trends Over Years (1993-2023)
Year	Robert M Grable Jr Mount Sinai High School
2023	720
2022	763
2021	760
2020	817
2019	817
2018	789
2017	789
2016	815
2015	814
2014	811
2013	832
2012	814
2011	831
2010	846
2009	823
2008	860
2007	847
2006	796
2005	751
2004	715
2003	690
2002	672
2001	639
2000	639
1999	592
1998	616
1997	645
1996	665
1995	703
1994	714
1993	731

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Gender %

Total Classroom Teachers

60 teachers

View Data

Total Classroom Teachers Trends Over Years (1992-2023)
Year	Robert M Grable Jr Mount Sinai High School
2023	61
2022	64
2021	61
2020	58
2019	58
2018	56
2017	56
2016	54
2015	53
2014	58
2013	64
2012	65
2011	64
2010	63
2009	66
2008	66
2007	57
2006	55
2005	54
2003	51
2002	52
2001	55
2000	58
1999	54
1998	51
1997	53
1996	51
1995	50
1994	50
1993	49
1992	45

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School Calendar

<�鶹��ý class='so-dt-title' id="school-rankings">School Rankings

Robert M Grable Jr Mount Sinai High School ranks within the top 5% of all 4,346 schools in New York (based off of combined math and reading proficiency testing data).

The of Robert M Grable Jr Mount Sinai High School is 0.42, which is less than the diversity score at state average of 0.72. The school's diversity has stayed relatively flat over five school years.

This School

State Level (NY)

#118 out of 4346 schools
(Top 5%)

View Data

Overall School Rank Trends Over Years (2012-2023)
Year	Robert M Grable Jr Mount Sinai High School
2023	#118
2022	#4
2021	#792
2019	#121
2018	#117
2017	#156
2016	#51
2015	#173
2014	#130
2013	#49
2012	#161

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80-84%

52%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	82%	52%	69%
2022	99%	46%	72%
2021	95%	55%	73%
2019	98%	54%	72%
2018	95%	52%	76%
2017	95%	50%	76%
2016	99%	49%	73%
2015	95%	48%	69%
2014	72%	41%	57%
2013	99%	39%	49%
2012	95%	69%	86%

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≥95%

49%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2011-2022)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2022	95%	49%	69%
2021	67%	62%	63%
2019	95%	52%	70%
2018	95%	52%	76%
2017	95%	47%	66%
2016	98%	46%	63%
2015	95%	40%	60%
2014	87%	37%	45%
2013	98%	39%	55%
2012	95%	60%	81%
2011	98%	58%	82%

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96%

78%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2022	96%	78%	96%
2021	95%	84%	95%

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Student-Teacher Ratio

12:1

11:1

View Data

Student-Teacher Ratio Comparison Over Years (1992-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	12:1	11:1	12:1
2022	12:1	11:1	12:1
2021	12:1	12:1	11:1
2020	14:1	13:1	15:1
2019	14:1	13:1	15:1
2018	14:1	14:1	14:1
2017	14:1	13:1	14:1
2016	15:1	14:1	14:1
2015	15:1	14:1	15:1
2014	14:1	14:1	14:1
2013	13:1	14:1	14:1
2012	12:1	14:1	15:1
2011	13:1	13:1	14:1
2010	13:1	13:1	15:1
2009	13:1	13:1	14:1
2008	13:1	13:1	15:1
2007	15:1	14:1	15:1
2006	14:1	14:1	14:1
2005	14:1	14:1	14:1
2003	14:1	14:1	14:1
2002	13:1	15:1	15:1
2001	12:1	14:1	14:1
2000	11:1	15:1	15:1
1999	11:1	16:1	15:1
1998	12:1	16:1	15:1
1997	12:1	16:1	15:1
1996	13:1	16:1	15:1
1995	14:1	16:1	16:1
1994	14:1	16:1	16:1
1993	15:1	16:1	16:1
1992	12:1	16:1	15:1

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American Indian

n/a

Asian

10%

View Data

Asian Student Percentage Comparison Over Years (1993-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	8%	10%	6%
2022	8%	10%	6%
2021	8%	10%	7%
2020	7%	9%	6%
2019	7%	9%	6%
2018	6%	9%	6%
2017	6%	9%	6%
2016	7%	9%	6%
2015	6%	9%	6%
2014	5%	9%	5%
2013	6%	9%	6%
2012	5%	9%	5%
2011	5%	8%	6%
2010	4%	8%	5%
2009	4%	9%	5%
2008	4%	8%	4%
2007	3%	8%	4%
2006	3%	7%	3%
2005	1%	7%	2%
2004	1%	7%	2%
2003	2%	6%	2%
2002	2%	6%	2%
2001	2%	7%	1%
2000	2%	6%	2%
1999	2%	6%	2%
1998	2%	5%	1%
1997	2%	5%	2%
1996	2%	5%	2%
1995	2%	5%	2%
1994	2%	5%	2%
1993	1%	5%	2%

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Hispanic

14%

30%

View Data

Hispanic Student Percentage Comparison Over Years (1993-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	12%	29%	14%
2022	9%	29%	13%
2021	6%	28%	9%
2020	5%	27%	8%
2019	5%	27%	8%
2018	5%	26%	7%
2017	5%	26%	7%
2016	4%	26%	7%
2015	6%	25%	7%
2014	4%	25%	6%
2013	3%	24%	4%
2012	3%	23%	4%
2011	2%	22%	3%
2010	3%	22%	3%
2009	3%	21%	3%
2008	3%	21%	3%
2007	3%	21%	2%
2006	2%	20%	2%
2005	2%	20%	2%
2004	2%	19%	2%
2003	2%	19%	2%
2002	2%	19%	1%
2001	3%	18%	2%
2000	3%	18%	2%
1999	3%	18%	2%
1998	2%	18%	2%
1997	3%	18%	2%
1996	2%	17%	2%
1995	2%	17%	2%
1994	3%	17%	2%
1993	2%	16%	2%

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Black

15%

View Data

Black Student Percentage Comparison Over Years (1993-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	2%	16%	1%
2022	1%	16%	1%
2021	1%	17%	1%
2020	2%	17%	1%
2019	2%	17%	1%
2018	1%	17%	1%
2017	1%	17%	1%
2016	2%	18%	1%
2015	2%	18%	1%
2014	3%	18%	2%
2013	3%	18%	2%
2012	2%	18%	2%
2011	2%	19%	2%
2010	2%	19%	2%
2009	2%	19%	2%
2008	1%	20%	2%
2007	1%	19%	1%
2006	1%	20%	1%
2005	1%	20%	1%
2004	1%	20%	1%
2003	1%	20%	1%
2002	1%	20%	1%
2001	1%	20%	1%
2000	1%	21%	1%
1999	1%	21%	1%
1998	1%	20%	1%
1997	2%	20%	2%
1996	2%	20%	2%
1995	1%	20%	1%
1994	1%	20%	1%
1993	2%	20%	1%

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White

75%

40%

View Data

White Student Percentage Comparison Over Years (1993-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	77%	40%	77%
2022	81%	41%	78%
2021	84%	41%	81%
2020	85%	43%	84%
2019	85%	43%	84%
2018	88%	44%	86%
2017	88%	44%	86%
2016	87%	44%	86%
2015	86%	45%	86%
2014	88%	46%	87%
2013	88%	47%	88%
2012	90%	48%	89%
2011	91%	49%	89%
2010	91%	51%	90%
2009	91%	51%	90%
2008	92%	51%	91%
2007	93%	52%	93%
2006	94%	53%	94%
2005	95%	53%	95%
2004	96%	54%	95%
2003	95%	55%	95%
2002	94%	55%	95%
2001	94%	55%	96%
2000	94%	55%	95%
1999	94%	55%	95%
1998	94%	57%	95%
1997	93%	57%	94%
1996	94%	58%	94%
1995	94%	58%	94%
1994	94%	58%	95%
1993	95%	59%	95%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2019-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	1%	4%	2%
2022	1%	3%	2%
2021	1%	3%	2%
2020	1%	3%	1%
2019	1%	3%	1%

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All Ethnic Groups

0.42

0.72

View Data

Diversity Score Comparison Over Years (1993-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	0.39	0.73	0.39
2022	0.33	0.72	0.37
2021	0.29	0.72	0.33
2020	0.27	0.71	0.29
2019	0.27	0.71	0.29
2018	0.22	0.71	0.26
2017	0.22	0.71	0.26
2016	0.24	0.70	0.26
2015	0.26	0.70	0.25
2014	0.22	0.69	0.24
2013	0.22	0.69	0.23
2012	0.18	0.68	0.21
2011	0.17	0.68	0.19
2010	0.17	0.66	0.19
2009	0.17	0.66	0.18
2008	0.15	0.66	0.17
2007	0.13	0.65	0.14
2006	0.12	0.64	0.12
2005	0.10	0.64	0.10
2004	0.08	0.63	0.10
2003	0.10	0.62	0.09
2002	0.12	0.62	0.09
2001	0.12	0.63	0.08
2000	0.11	0.62	0.08
1999	0.12	0.62	0.09
1998	0.12	0.61	0.10
1997	0.13	0.61	0.11
1996	0.11	0.60	0.11
1995	0.12	0.60	0.11
1994	0.12	0.60	0.10
1993	0.10	0.59	0.09

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96%

87%

View Data

Graduation Rate Comparison Over Years (2013-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	96%	87%	96%
2022	95%	87%	92%
2021	95%	85%	97%
2020	98%	83%	96%
2019	95%	83%	94%
2018	95%	82%	95%
2017	99%	82%	98%
2016	99%	81%	99%
2015	96%	79%	94%
2014	96%	78%	95%
2013	95%	78%	95%

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Participates in the

Yes

Eligible for

11%

54%

View Data

Free Lunch Eligibility Comparison Over Years (1995-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	8%	53%	10%
2022	10%	51%	8%
2021	8%	52%	9%
2020	8%	50%	9%
2019	8%	50%	9%
2018	6%	48%	5%
2017	6%	48%	5%
2016	5%	44%	5%
2015	5%	45%	3%
2014	5%	42%	4%
2013	3%	41%	2%
2012	4%	42%	3%
2011	3%	41%	3%
2010	2%	16%	3%
2009	2%	37%	1%
2008	2%	36%	2%
2007	1%	36%	1%
2006	2%	37%	2%
2005	1%	14%	2%
2003	1%	13%	1%
2002	2%	36%	2%
2001	3%	36%	2%
2000	2%	37%	3%
1999	3%	38%	3%
1998	4%	37%	4%
1997	4%	38%	4%
1996	4%	13%	3%
1995	4%	13%	4%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2001-2023)
Year	Robert M Grable Jr Mount Sinai High School	New York	Mount Sinai Union Free School District
2023	1%	3%	1%
2022	1%	3%
2015	1%	6%
2014	1%	5%	1%
2013	1%	7%	1%
2012	1%	7%	1%
2011	1%	7%	1%
2010	1%	5%	1%
2003	1%	4%
2002	1%	7%	1%
2001	1%	7%	1%

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School Statewide Testing

School District Name

Mount Sinai Union Free School District

Source: National Center for Education Statistics (NCES), NY Dept. of Education

Profile last updated: 02/09/2025

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<�鶹��ý class='so-dt-title' id='faq'>Frequently Asked Questions

What is Robert M Grable Jr Mount Sinai High School's ranking?

Robert M Grable Jr Mount Sinai High School is ranked #118 out of 4,346 schools, which ranks it among the top 5% of public schools in New York.

What schools are Robert M Grable Jr Mount Sinai High School often compared to?

Robert M Grable Jr Mount Sinai High Schoolis often viewed alongside schools like Miller Place High School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

80-84% of students have achieved math proficiency (compared to the 52% NY state average), while ≥95% of students have achieved reading proficiency (compared to the 49% NY state average).

What is the graduation rate of Robert M Grable Jr Mount Sinai High School?

The graduation rate of Robert M Grable Jr Mount Sinai High School is 96%, which is higher than the New York state average of 87%.

How many students attend Robert M Grable Jr Mount Sinai High School?

700 students attend Robert M Grable Jr Mount Sinai High School.

What is the racial composition of the student body?

75% of Robert M Grable Jr Mount Sinai High School students are White, 14% of students are Hispanic, 8% of students are Asian, 2% of students are Black, and 1% of students are Two or more races.

What is the student-teacher ratio of Robert M Grable Jr Mount Sinai High School?

Robert M Grable Jr Mount Sinai High School has a student ration of 12:1, which is higher than the New York state average of 11:1.

What grades does Robert M Grable Jr Mount Sinai High School offer ?

Robert M Grable Jr Mount Sinai High School offers enrollment in grades 9-12 (Supplemental Virtual).

What school district is Robert M Grable Jr Mount Sinai High School part of?

Robert M Grable Jr Mount Sinai High School is part of Mount Sinai Union Free School District.

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