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What's something ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL does better than most schools?
Community prompt from u/allk12. Replies below.
Enrollment
710
High
DISTRICT 661 · STATE 668
SCHOOL COMMUNITY·MOUNT SINAI UNION FREE SCHOOL DISTRICT·NCES 362004004827
ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL
110 N COUNTRY RD, MOUNT SINAI, NY 11766 · (631) 870-2800 · Suffolk County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL710 STUDENTS
A+
allk12 Grade
Scored higher than 97% of New York public high schools
- A+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded New York public high schools
Student : Teacher
10.9:1
65 FTE teachers
DISTRICT 11.6:1 · STATE 11.0:1
Free / Reduced Lunch
12%
87 students
DISTRICT 13% · STATE 58%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 194 | 27% |
| Grade 10 | 157 | 22% |
| Grade 11 | 161 | 23% |
| Grade 12 | 193 | 27% |
| Ungraded | 5 | 1% |
Student demographics
43%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 42% · STATE 72% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on grade levels within MOUNT SINAI UNION FREE SCHOOL DISTRICT. Attendance zones can vary; confirm enrollment with the district.
Test scores
NYS Assessments 2024-25 . % Proficient (Level 3 + Level 4)English Language Arts
96.0%
NY avg 58.3% . +1.0pp since 2023
Math
97.0%
NY avg 57.4% . +2.0pp since 2023
What this means: On the NYS Assessments, New York's statewide test, about 96 of every 100 students at this school read and write at grade level and about 97 of 100 do math at grade level. Across all New York schools, those numbers are about 58 and 57. Reading and writing scores are up about 1 points since 2023, while math scores are up about 2 points.
NYS Assessments results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 96.0% | 97.0% |
| 2023-24 | 95.0% | 95.0% |
% Proficient (Level 3 + Level 4), all students and all tested grades.
Source: NYS Assessments. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
OUTPERFORMING
Top 10% of NY schools after controlling for student poverty
Actual proficiency
95.5%
composite math + reading, all grades
Predicted
70.5%
based on NY schools with similar FRL share
Beats by
+25.0pp
above demographic expectation
What this means: About 96% of students here test proficient in math and reading, well above the roughly 70% typical for New York schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 25 points, placing it in New York's top 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL
ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL's state test result (95.5% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL this school | 710 | 12.3% | 95.5% |
| MERRICK AVENUE MIDDLE SCHOOL MERRICK | 848 | 13.0% | 74.8% |
| NORTH SHORE SENIOR HIGH SCHOOL GLEN HEAD | 776 | 14.4% | 93.0% |
| SOMERS SENIOR HIGH SCHOOL LINCOLNDALE | 847 | 13.7% | 93.3% |
| PLAINEDGE SENIOR HIGH SCHOOL MASSAPEQUA | 856 | 16.5% | 84.3% |
| SEAFORD SENIOR HIGH SCHOOL SEAFORD | 650 | 14.6% | 71.7% |
Matched among New York high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL ranks
Among high schools| Measure | This school | In New York | In Suffolk County |
|---|---|---|---|
| State test proficiency ranked highest first | 95.5% | #16 of 1,135 | #1 of 57 |
| Math proficiency ranked highest first | 97.0% | #14 of 1,109 ▲ 36 | #1 of 57 ▲ 1 |
| Reading proficiency ranked highest first | 96.0% | #53 of 1,135 ▲ 69 | #9 of 56 ▲ 2 |
| Enrollment ranked largest first | 710 | #352 of 1,216 | #46 of 59 |
| Students per teacher ranked fewest first | 10.9:1 | #508 of 1,058 | #21 of 57 |
| Diversity index ranked most diverse first | 42.7% | #629 of 1,070 | #40 of 57 |
| Free and reduced lunch ranked highest share first | 12.3% | #1,144 of 1,167 | #55 of 57 |
| Enrollment change since 2017-18 ranked steepest decline first | -9.2% | #453 of 743 | #28 of 45 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
710
-50 (-7%) vs 2020
+11% since 2000-01, when it was 639
Student : Teacher
10.9:1
was 12.7:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 710 | 65 | 10.9:1 | 12% (87) |
| 2023-24 | 700 | 60 | 11.7:1 | 12% (81) |
| 2022-23 | 720 | 61.5 | 11.7:1 | 9% (67) |
| 2020-21 | 760 | 60 | 12.7:1 | 9% (65) |
| 2017-18 | 782 | 56.6 | 13.8:1 | 9% (73) |
| 2015-16 | 815 | 53 | 15.4:1 | 6% (48) |
| 2010-11 | 831 | 63 | 13.2:1 | 4% (32) |
| 2000-01 | 639 | 55 | 11.6:1 | 4% (24) |
Source: NCES Common Core of Data. Rows are the federal collections on file for ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL.
About ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL
ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL is one of the public schools in MOUNT SINAI, New York. It is a medium-sized high school. School enrollment was 710 students in 2024-25, in grades 9 through 12.
Besides ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL, MOUNT SINAI UNION FREE SCHOOL DISTRICT runs 2 other schools. The district enrolls 1,984 students.
At ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL, White students make up 74% of the student body. Next come 14% Hispanic and 9% Asian. The county population is about 66% White. ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL's diversity index is 43%, against a US figure of 70%.
Teachers at the school number 65 full-time equivalents, and the ratio is 10.9:1. That matches the 11.0:1 average for high schools in New York fairly closely. Roughly 12% of the student body qualifies for free or reduced-price lunch. Among public schools in Suffolk County, the average eligibility rate is 39%.
allk12 grades ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL an A+. The grade compares the school only with New York public high schools, because each state gives its own test.
On allk12's BeatsExpectations measure, ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL is among the top 10% of schools in New York. Predicted: 70.5%. Actual: 95.5%.
Census Bureau estimates for Suffolk County show that the median household income is $130,686, 40% of adults hold a bachelor's degree or higher, and about 4% of people live in poverty. ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL is one of 343 public schools in the county.
The shortest distance from ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL to another public school is about 0.2 miles, to MOUNT SINAI MIDDLE SCHOOL. Other public schools within five miles: at least 8. ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL comes in 1st of 9 nearby schools on average proficiency.
In the federal locale system, ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL is coded Suburb: Large, for schools in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Over 4 years, ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL's enrollment dropped 7%, to 710. Staffing shifted too: the ratio moved from 12.7:1 to 10.9:1.
Families, students, and staff can use this page to discuss school safety, transportation, and start times at ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL. Alumni can share how the school prepared them.
Suffolk County at a glance
View full county profilePopulation
1,530,146
Census ACS
Median income
$130,686
Household, ACS
Bachelor's+
40%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
343
222,439 students
Quick facts
Related schools
Other schools in MOUNT SINAI UNION FREE SCHOOL DISTRICT
- MOUNT SINAI ELEMENTARY SCHOOLElementary · 657 students
- MOUNT SINAI MIDDLE SCHOOLMiddle · 617 students
Other schools in MOUNT SINAI
- MOUNT SINAI ELEMENTARY SCHOOLElementary · 657 students
- MOUNT SINAI MIDDLE SCHOOLMiddle · 617 students
Nearby schools
- MOUNT SINAI MIDDLE SCHOOL0.2 mi · 617
- MOUNT SINAI ELEMENTARY SCHOOL0.4 mi · 657
- PORT JEFFERSON ELEMENTARY SCHOOL1.5 mi · 370
- MILLER PLACE HIGH SCHOOL2.0 mi · 764
- JOHN F KENNEDY MIDDLE SCHOOL2.0 mi · 814
- COMSEWOGUE HIGH SCHOOL2.2 mi · 1,160
Frequently asked questions
About ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOLHow large is ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL?
ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL enrolls approximately 710 students in grades 09-12.
Is ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL an elementary, middle, or high school?
ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL is a high school covering grades 09-12.
What is the student-teacher ratio at ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL?
The student-to-teacher ratio at ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL is approximately 10.9:1 (65 FTE teachers).
What is the racial breakdown of students at ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL?
At ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL, the student body is approximately 74% White, 14% Hispanic, 1% Black, 9% Asian, 2% Two or more.
Is ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL public or private?
ROBERT M GRABLE JR MOUNT SINAI HIGH SCHOOL is a public K-12 school, overseen by MOUNT SINAI UNION FREE SCHOOL DISTRICT.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.