Mamaroneck Union Free School District, NY

Original Research by School Decision on Mamaroneck Union Free School District

Mamaroneck Union Free School District serves a mid-sized student population across pre-K through grade 12 from its six schools—four elementary buildings, one middle school, and one high school. The district sits in Westchester County in what amounts to an affluent suburban housing market, with median home values substantially above state and national benchmarks. Rental rates are also high, placing housing costs well ahead of median household income for the area, though families considering the district know this trade-off upfront.

The most recent state assessment data show solid performance across grades 3 through 7 in both mathematics and English language arts. Math proficiency ranges from the upper 70s in the early elementary grades to mid-80s in grades 4 and 6, then strengthens further to the high 80s in grade 7. ELA proficiency is similarly steady, sitting in the low-to-mid 70s through grade 5, climbing into the 80s by grades 6 through 8. Science proficiency at the tested grade (5) sits in the mid-70s. These results place the district above the midpoint of proficiency across Westchester County's districts when measured as an overall index.

A notable anomaly appears in eighth-grade math: the proficiency rate drops sharply to the mid-40s, but this reflects data collection rather than genuine performance decline. Only a small fraction of eighth graders took the math state test that year, suggesting most students were placed in accelerated or Regents-track geometry courses that bypass the general assessment. This is a structural feature of the district's math progression and should be read as evidence of course advancement rather than weakness.

State testing data for high school are not available in this dataset; the information provided does not include Regents exam results or other secondary-level assessments that would help a family understand college-readiness outcomes at Mamaroneck High School.

Chronic absenteeism sits just below the county median, indicating attendance patterns typical for the district's peer group. Per-pupil spending is in the lower range among county districts, despite the district's affluent setting; a parent may want to explore with the district how this compares to instructional staffing and program breadth.

Two curriculum initiatives merit mention because they shape the learning environment. The Dos Caminos dual-language immersion program in Spanish and English began as a single kindergarten class and has expanded into a K-12 pathway that now reaches through eighth grade and into the high school, where it includes AP-level coursework taught entirely in Spanish. For families seeking bilingual or biliterate pathways, this represents an established, growing option within the district itself.

In May 2024 voters approved a multi-year capital bond by a wide margin to address aging infrastructure across all six schools. Phase 1 improvements have been completed at three schools—Hommocks Middle School, Mamaroneck High School, and Mamaroneck Avenue School—with work including pool and locker-room renovations, roof and HVAC replacement, accessibility upgrades, and food-service improvements. Additional phases are scheduled through 2026 and beyond. Voters also approved a 2024-25 operating budget that included a tax-levy increase kept under the state cap; depending on individual property assessments, some households saw an estimated tax-rate decrease despite overall spending growth.

The district's location spans Mamaroneck and Larchmont, two adjacent communities with somewhat different housing profiles. Larchmont homes command higher median values and rents than Mamaroneck proper, though both feed the same schools. The broader Westchester County market has softened slightly in recent months—inventory is up, pending sales are down, and the median listing price has dipped from its prior year—but homes in this district's footprint remain high-priced and move relatively quickly.

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District Context

Officially reported figures, 2024-25.

Enrollment

5,565

Grades

PK–12

Schools

Student body

Hispanic 24%

Black 2%

White 65%

Asian 3%

Two+ 6%

Am. Indian / AK Native 0%

Hawaiian / Pac. Isl. 0%

By economic status

Percent proficient by grade, as reported

Economically disadvantaged

Not disadvantaged

ELA

Gr EOC

57%

—

Gr 3

29%

81%

Gr 4

40%

82%

Gr 5

54%

84%

Gr 6

53%

86%

Gr 7

40%

87%

Gr 8

49%

84%

Math

Gr EOC

—

Gr 3

44%

86%

Gr 4

49%

91%

Gr 5

44%

85%

Gr 6

48%

90%

Gr 7

58%

94%

Gr 8

34%

56%

Science

Gr EOC

62%

—

Gr 5

49%

83%

Social studies

Gr EOC

73%

—

Schools in this District

6 schools are officially reported under this district.

CENTRAL SCHOOL

CHATSWORTH AVENUE SCHOOL

HOMMOCKS SCHOOL

MAMARONECK AVENUE SCHOOL

MAMARONECK HIGH SCHOOL

MURRAY AVENUE SCHOOL

Academic Performance

Percent of students meeting or exceeding state standards, by grade.

Mathematics

6 grades reported

79%

Grade 3

84%

Grade 4

79%

Grade 5

83%

Grade 6

88%

Grade 7

47%

Grade 8

English Language Arts

6 grades reported

73%

Grade 3

75%

Grade 4

80%

Grade 5

80%

Grade 6

78%

Grade 7

79%

Grade 8

Science

1 grade reported

77%

Grade 5

Housing & Real Estate

Data as of April 2026 | District-weighted from constituent ZIP codes

Home Values

Typical home value$1.40M

Year-over-year change+10.2%

Range across 4 ZIP codes$771K to $1.7M

vs. state typical2.73x

vs. national typical3.79x

Home value trend (12 months)

ZIP code home values (4 ZIP codes)

ZIP	City	Value	YoY	Weight
10538	Larchmont	$1.7M	+11.8%	54.1%
10543	Mamaroneck	$1.0M	+8.4%	45.5%
10583	Scarsdale	$1.5M	+9.3%	0.3%
10801	New Rochelle	$771K	+7.9%	0.1%

Rental Market

Typical monthly rent$6,969/mo

Year-over-year change+7.0%

Range across 4 ZIP codes$2,939 to $9,558/mo

Rent trend (12 months)

ZIP code rents (4 ZIP codes)

ZIP	City	Rent/mo	YoY	Weight
10538	Larchmont	$9,558	—	54.1%
10543	Mamaroneck	$3,893	+7.0%	45.5%
10583	Scarsdale	$7,076	—	0.3%
10801	New Rochelle	$2,939	+1.1%	0.1%

Affordability

Est. monthly mortgage (20% down at 6.48%)$7,043/mo

Home price / national median income16.7x

Annual rent / national median income99.9%

Est. mortgage exceeds rent by$74/mo

Market Activity: Westchester County

Median listing price$750,000

Median listing price YoY-5.7%

Median price per sq ft$419

Median price per sq ft YoY+1.9%

Median days on market30.5 days

Median days on market YoY-12.9%

Active listings1,539

Active listings YoY-2.0%

New listings1,108

New listings YoY-8.3%

Pending listings236

Pending listings YoY-88.6%

Hotness: median listing price$712,500

Hotness: median listing price YoY-3.2%

Supply score94.1

Supply score YoY+11.3%

Demand score70.5

Demand score YoY+35.4%

Median listing price (12 months)

Median price per sq ft (12 months)

Median days on market (12 months)

Active listings (12 months)

New listings (12 months)

Pending listings (12 months)

Hotness: median listing price (12 months)

Supply score (12 months)

Demand score (12 months)

Comparison

State typical home value$510,449 (+5.0% YoY)

National typical home value$368,198 (+0.6% YoY)

State ZHVI trend (12 months)

National ZHVI trend (12 months)

Economic Context

30-year fixed mortgage rate6.48%

National unemployment rate4.3%

National median household income$83,730

CPI: Rent of shelter (index)447.05

30-year fixed mortgage rate (12 months)

National unemployment rate (12 months)

National median household income (12 months)

CPI: Rent of shelter (index) (12 months)

Sources: Zillow Home Value Index and Zillow Observed Rent Index (Zillow Group), Realtor.com via Federal Reserve Bank of St. Louis (FRED)

Data Currently Unavailable

Civil Rights Data (CRDC)

This profile is derived exclusively from publicly available federal and state datasets. It may not reflect the most current information available. We encourage parents and families to supplement this data with information published directly on the school’s website, which may include more recent figures, additional programs, or updated enrollment data.