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SCHOOL COMMUNITY·MAMARONECK UNION FREE SCHOOL DISTRICT·NCES 361824001648

MAMARONECK HIGH SCHOOL

1000 W BOSTON POST RD, MAMARONECK, NY 10543 · (914) 220-3100 · Westchester County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,764 STUDENTS
A
allk12 Grade
Scored higher than 85% of New York public high schools
  • ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • A-Beats 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

Enrollment
1,764
High
DISTRICT 920 · STATE 668
Student : Teacher
13.5:1
131 FTE teachers
DISTRICT 12.4:1 · STATE 11.0:1
Free / Reduced Lunch
23%
405 students
DISTRICT 19% · 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

GradeStudentsShare
Grade 947027%
Grade 1040323%
Grade 1145426%
Grade 1241223%
Ungraded251%
Student demographics
53%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 53% · STATE 72% · US 70%
White
1,10663%
DISTRICT 64% · STATE 39% · US 43%
Hispanic
46526%
DISTRICT 24% · STATE 31% · US 30%
Black
563%
DISTRICT 2% · STATE 16% · US 15%
Asian
553%
DISTRICT 3% · STATE 10% · US 6%
Two+
764%
DISTRICT 6% · STATE 4% · US 5%
Native American
20%
DISTRICT 0% · STATE 1% · US 1%
Pacific Islander
20%
DISTRICT 0% · STATE 0% · US 0%
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
Male
93153%
Female
83147%

School pathway

Feeds from
HOMMOCKS SCHOOL06–08
Based on grade levels within MAMARONECK UNION FREE SCHOOL DISTRICT. Attendance zones can vary; confirm enrollment with the district.

Discussions

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Test scores

NYS Assessments 2024-25 . % Proficient (Level 3 + Level 4)
English Language Arts
83.0%
NY avg 58.3% . -9.0pp since 2023
Math
77.0%
NY avg 57.4% . +5.0pp since 2023

What this means: On the NYS Assessments, New York's statewide test, about 83 of every 100 students at this school read and write at grade level and about 77 of 100 do math at grade level. Across all New York schools, those numbers are about 58 and 57. Reading and writing scores are down about 9 points since 2023, while math scores are up about 5 points.

NYS Assessments results by year

School yearEnglish Language ArtsMath
2024-2583.0%77.0%
2023-2492.0%72.0%
% 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 · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
83.0%
composite math + reading, all grades
Predicted
66.5%
based on NY schools with similar FRL share
Beats by
+16.4pp
above demographic expectation

What this means: About 83% of students here test proficient in math and reading, compared with the roughly 67% typical for New York schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among New York's top nor bottom 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 MAMARONECK HIGH SCHOOL

MAMARONECK HIGH SCHOOL's state test result (83.0% proficient) is higher than 5 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
MAMARONECK HIGH SCHOOL this school1,76423.0%83.0%
SCHOOL 7-OCEANSIDE SENIOR HIGH SCHOOL
OCEANSIDE
1,66820.1%68.0%
JOHN JAY SENIOR HIGH SCHOOL
HOPEWELL JUNCTION
1,76823.2%71.3%
MAHOPAC HIGH SCHOOL
MAHOPAC
1,25523.4%78.3%
WARWICK VALLEY HIGH SCHOOL
WARWICK
1,31420.7%74.8%
CONNETQUOT HIGH SCHOOL
BOHEMIA
1,77418.1%79.5%
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 MAMARONECK HIGH SCHOOL ranks

Among high schools
MeasureThis schoolIn New YorkIn Westchester County
State test proficiency
ranked highest first
83.0%#137 of 1,135#15 of 46
Math proficiency
ranked highest first
77.0%#172 of 1,109
▲ 164
#17 of 48
▲ 9
Reading proficiency
ranked highest first
83.0%#368 of 1,135
▼ 158
#30 of 48
▼ 5
Enrollment
ranked largest first
1,764#62 of 1,216#3 of 56
Students per teacher
ranked fewest first
13.5:1#882 of 1,058#38 of 48
Diversity index
ranked most diverse first
53.2%#420 of 1,070#23 of 48
Free and reduced lunch
ranked highest share first
23.0%#1,073 of 1,167#28 of 49
Enrollment change since 2017-18
ranked fastest growth first
+10.0%#148 of 339#4 of 18
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 2024-25
Enrollment
1,764
+120 (+7%) vs 2020
+63% since 1990-91, when it was 1,083
Student : Teacher
13.5:1
was 13.6:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-251,764130.713.5:123% (405)
2023-241,696125.913.5:123% (395)
2022-231,660128.512.9:123% (386)
2020-211,64412113.6:118% (293)
2017-181,604103.315.5:118% (284)
2015-161,53110514.6:116% (247)
2010-111,50110114.9:16% (88)
2000-011,1948713.7:13% (35)
1990-911,0839411.5:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for MAMARONECK HIGH SCHOOL.

About MAMARONECK HIGH SCHOOL

MAMARONECK HIGH SCHOOL operates as a large high school in MAMARONECK, New York. The school had 1,764 students in grades 9 through 12 in 2024-25. Average enrollment for high schools in New York is about 668, so this school runs 164% larger than that.

MAMARONECK UNION FREE SCHOOL DISTRICT has 6 schools and 5,520 students, and MAMARONECK HIGH SCHOOL is one of those schools.

A majority of students at MAMARONECK HIGH SCHOOL, 63%, are White. The next largest groups are 26% Hispanic, 4% multiracial, 3% Black, and 3% Asian. The school's White share is 11 points above the 52% share among Westchester County residents. MAMARONECK HIGH SCHOOL has a diversity index of 53%, compared with 70% for all US public school students.

With 130.7 full-time-equivalent teachers in 2024-25, the ratio at MAMARONECK HIGH SCHOOL was 13.5:1. Among high schools in New York, the typical ratio is 11.0:1. MAMARONECK HIGH SCHOOL's free or reduced-price lunch eligibility rate is 23%. Among public schools in Westchester County, the average eligibility rate is 38%.

Measured against New York public high schools, MAMARONECK HIGH SCHOOL receives an A. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.

MAMARONECK HIGH SCHOOL's average proficiency rate on state tests of 83.0% is 16.4 points above the 66.5% the model predicts from its lunch-eligibility share.

County data help place the school in context: in Westchester County, median household income is about $118,976, roughly 53% of adults have a four-year degree or more, and the share of residents below the poverty line is 6%. The public schools of Westchester County number 255 and enroll about 140,968.

The next-closest public school is CENTRAL SCHOOL, about 0.3 miles away. There are at least 8 more public schools inside five miles. Nearby schools average 75.6% on proficiency, and MAMARONECK HIGH SCHOOL is above that at 83.0%.

For locale, NCES codes MAMARONECK HIGH SCHOOL as Suburb: Large.

MAMARONECK HIGH SCHOOL had 1,644 students in 2020-21 and 1,764 in 2024-25, a 7% rise.

Parents and students can post about school events, clubs, and volunteer needs at MAMARONECK HIGH SCHOOL. Alumni can share how the school prepared them.

Westchester County at a glance

View full county profile
Population
999,677
Census ACS
Median income
$118,976
Household, ACS
Bachelor's+
53%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
255
140,968 students

Quick facts

School name
MAMARONECK HIGH SCHOOL
District
MAMARONECK UNION FREE SCHOOL DISTRICT
Address
1000 W BOSTON POST RD, MAMARONECK, NY 10543
Phone
(914) 220-3100
County
Westchester County
Level
High
Grade range
09–12
Total enrollment
1,764
Teachers (FTE)
131
Student–teacher ratio
13.5:1
Free and reduced lunch
405 (23%)
Locale
21-Suburb: Large
NCES ID
361824001648
Charter school
No
Virtual school
No

Related schools

Other schools in MAMARONECK UNION FREE SCHOOL DISTRICT
Other schools in MAMARONECK
Nearby schools

Frequently asked questions

About MAMARONECK HIGH SCHOOL
How large is MAMARONECK HIGH SCHOOL?
MAMARONECK HIGH SCHOOL enrolls approximately 1,764 students in grades 09-12.
Is MAMARONECK HIGH SCHOOL an elementary, middle, or high school?
MAMARONECK HIGH SCHOOL is a high school covering grades 09-12.
How many teachers does MAMARONECK HIGH SCHOOL have?
MAMARONECK HIGH SCHOOL employs 131 FTE teachers, for a student-to-teacher ratio of 13.5:1.
How diverse is MAMARONECK HIGH SCHOOL?
MAMARONECK HIGH SCHOOL reports a student body of 63% White, 26% Hispanic, 3% Black, 3% Asian, 4% Two or more.
Who oversees MAMARONECK HIGH SCHOOL?
MAMARONECK HIGH SCHOOL is overseen by MAMARONECK UNION FREE SCHOOL DISTRICT in Westchester County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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