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Very Good

#136 of 991 private schools in NY

Top 14% of private schools

Our Lady of Mercy Academy

High School

815 CONVENT RD, Syosset, NY 11791

Private Estimated Score

Estimated academic score. This school does not have standardized test data. Based on NY statewide data. Learn more

Enrollment

275

Student-Teacher

6.9:1

Score

7.5

Grades

9th – 12th

Updated 2021-22

How this school compares

In Syosset

#1 of 2

public schools

New York high schools

#29 of 191

About Our Lady of Mercy Academy

OUR LADY OF MERCY ACADEMY is a high school located in Syosset, New York, nestled within the suburban community of Nassau County. The campus sits at 815 Convent Road and caters to students from ninth through twelfth grade. With an enrollment of 275 students, the school maintains a supportive environment thanks to its student-teacher ratio of 6.9:1 and a dedicated teaching staff of 40 full-time equivalent teachers.

While academic performance data is limited, OUR LADY OF MERCY ACADEMY holds a MySchoolScout rating of 4.2 out of 10 and ranks as the 95th school in New York State among 991 schools. The school focuses on fostering student development through personalized attention and community engagement. OUR LADY OF MERCY ACADEMY is situated in a large suburban area, providing students with a blend of urban amenities and the tranquility of suburban living.

What Parents Should Know

With a student-teacher ratio of 6.9:1, Our Lady of Mercy Academy offers a notably low ratio compared to the national average. This typically means smaller class sizes and more opportunities for one-on-one interaction between students and teachers.

As a private school, Our Lady of Mercy Academy operates independently from the local public school district. Families considering this school should inquire about tuition costs, financial aid availability, and the admissions process. Private schools are not required to follow the same curriculum standards as public schools, which can be either an advantage or a consideration depending on your priorities.

Compare to Public Schools

Beta

How Our Lady of Mercy Academy compares to the 10 public schools in Syosset, NY

Student-Teacher Ratio
6.9:1
This School
vs
9.6:1
Public Avg
Avg School Size
275
This School
vs
688
Public Avg
Avg School Scout Rating
7.5
This School
vs
8.3
Public Avg

Student Demographics

White 75.3% vs 0%
Hispanic 12% vs 0%
Asian 5.5% vs 0%
Black 3.3% vs 0%
Our Lady of Mercy Academy Syosset Public Avg

All Schools in Syosset

School Rating
Our Lady of Mercy Academy (this school) 7.5
PS 256 7.8
SYOSSET SENIOR HIGH SCHOOL 8.3
SOUTH WOODS MIDDLE SCHOOL 8.1
VILLAGE ELEMENTARY SCHOOL 9.0
BERRY HILL ELEMENTARY SCHOOL 8.0
H B THOMPSON MIDDLE SCHOOL 7.4
WILLITS ELEMENTARY SCHOOL 7.4
SOUTH GROVE ELEMENTARY SCHOOL 9.1
WEST SIDE SCHOOL 9.1
ROBBINS LANE ELEMENTARY SCHOOL 9.2

Demographics sourced from NCES Private School Survey (PSS) and Common Core of Data (CCD). Comparisons are based on enrollment-weighted averages.

Score Breakdown

What This Rating Measures

This rating reflects classroom size, instructional time, student diversity, community resources, and school characteristics. Private schools are ranked against other private schools in NY.

Classroom Attention
? Student-teacher ratio calibrated against other private schools. Lower ratios mean more individual attention. (30% of overall score)
A- 7.7 / 10
View breakdown
Student-Teacher Ratio 6.9:1
Instructional Commitment
? Total annual instructional hours based on school day length and days per year. (15% of overall score)
A- 7.5 / 10
View breakdown
School Day Length 7 hours
Annual Instructional Hours 1,260
Diversity & Inclusion
? Racial and ethnic diversity of the student body using Simpson's diversity index. (20% of overall score)
B+ 6.8 / 10
View breakdown
Diversity Index 41%
Community Context

Data Unavailable

School Profile
? Enrollment size and grade span breadth — indicators of program depth and peer community. (15% of overall score)
A- 8.1 / 10
View breakdown
Enrollment 275
View data sources

Score basis: Private school model

Data coverage: 80% of scoring components had data

Components scored: 4 of 5

Ranking pool: Private schools in NY

Test Scores

Test score data not yet available for this school.

Student Demographics NCES PSS (SY 2021-22)

White 75.3%
Hispanic 12.0%
Asian 5.5%
Black 3.3%
Two or More 2.9%
Native American 0.7%
Pacific Islander 0.4%

Source: NCES Private School Survey (PSS)

Location

815 CONVENT RD, Syosset, NY 11791

Nearby Alternatives

Families considering Our Lady of Mercy Academy may also want to explore other high schools in the area. SYOSSET SENIOR HIGH SCHOOL (rated 8.3/10, 0.4 miles away), which scores slightly higher. Another option is FUSION ACADEMY WOODBURY NY (rated 6.8/10, 1.0 miles away, in nearby Woodbury), with a comparable rating. Additionally, CRESTWOOD COUNTRY DAY SCHOOL (rated 3.6/10, 2.7 miles away, in nearby Melville), a more accessible option. For more schools in Syosset, see our Syosset schools guide .

Nearby Schools

20 within 2.7 mi
School Distance Rating
PS 256 Syosset 0.3 mi 7.8
SYOSSET SENIOR HIGH SCHOOL Syosset 0.4 mi 8.3
SOUTH WOODS MIDDLE SCHOOL Syosset 0.6 mi 8.1
THE CENTER FOR DEVELOPMENTAL DISABILITIES Woodbury 0.6 mi 7.2
VILLAGE ELEMENTARY SCHOOL Syosset 0.7 mi 9.0
BERRY HILL ELEMENTARY SCHOOL Syosset 0.9 mi 8.0
FUSION ACADEMY WOODBURY NY Woodbury 1.0 mi 6.8
ST EDWARD CONFESSOR SCHOOL Syosset 0.9 mi 6.7
WALT WHITMAN ELEMENTARY SCHOOL Woodbury 1.0 mi 8.1
H B THOMPSON MIDDLE SCHOOL Syosset 1.4 mi 7.4
WILLITS ELEMENTARY SCHOOL Syosset 1.5 mi 7.4
JUDY JACOBS PARKWAY ELEMENTARY SCHOOL Plainview 2.0 mi 9.1
BAYLIS ELEMENTARY SCHOOL Plainview 2.1 mi 8.6
SOUTH GROVE ELEMENTARY SCHOOL Syosset 2.0 mi 9.1
WEST SIDE SCHOOL Syosset 2.2 mi 9.1
EAST WOODS SCHOOL Oyster Bay 2.4 mi 7.6
STRATFORD ROAD SCHOOL Plainview 2.8 mi 8.9
HEBREW ACADEMY OF NASSAU-PLAINVIEW CAMPUS Plainview 2.8 mi 7.3
PLAINVIEW-OLD BETHPAGE MIDDLE SCHOOL Plainview 2.9 mi 8.0
CRESTWOOD COUNTRY DAY SCHOOL Melville 2.7 mi 3.6

Neighborhood Census ACS (2019-2023)

Census data for ZIP 11791 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$204,357

Median Home Value

$918,900

Median Rent

$3,091/mo

Population

25,194

College Educated

70.6%

Homeownership

92.8%

Avg Commute

39.5 min

Poverty Rate

3.5%

Median Age

43

Community Profile

The community surrounding Our Lady of Mercy Academy has a median household income of $204,357. It is a well-educated community where 71% of adults hold a bachelor's degree or higher. The median home value in the area is $918,900, with a median rent of $3,091/month. The local poverty rate of 3.5% is relatively low. The average commute in the area is 40 minutes, which is above the national average. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
ACADEMY OF THE HOLY NAMES Albany, NY 7.5
BRONX ENVISION ACADEMY Bronx, NY 7.5
CARDINAL O'HARA HIGH SCHOOL Tonawanda, NY 7.5
CUBA-RUSHFORD HIGH SCHOOL Cuba, NY 7.5
EAST NEW YORK ARTS AND CIVICS HIGH SCHOOL (THE) Brooklyn, NY 7.5
JUDITH S KAYE SCHOOL (THE) New York, NY 7.5

Frequently Asked Questions

Common questions about Our Lady of Mercy Academy

What grades does Our Lady of Mercy Academy serve?

Our Lady of Mercy Academy serves students in grades 9th through 12th.

How many students attend Our Lady of Mercy Academy?

Our Lady of Mercy Academy has an enrollment of approximately 275 students.

What is the student-teacher ratio at Our Lady of Mercy Academy?

The student-teacher ratio at Our Lady of Mercy Academy is 6.9:1. A lower ratio generally means more individual attention per student. The national average is approximately 11:1 for private schools.

How does Our Lady of Mercy Academy rank in NY?

Our Lady of Mercy Academy is ranked #136 out of 991 private schools in NY.

What is Our Lady of Mercy Academy's MySchoolScout rating?

Our Lady of Mercy Academy has a composite rating of 7.5 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.

Is Our Lady of Mercy Academy a private school?

Yes, Our Lady of Mercy Academy is a private all-girls school with a Roman Catholic affiliation. Private schools are not required to participate in state standardized testing, so academic performance data may be limited compared to public schools.

Is Our Lady of Mercy Academy a religious school?

Our Lady of Mercy Academy has a Roman Catholic religious affiliation.

11 schools nearby View map →

Neighborhood Context

Walk Score
11 Car-Dependent
Bike Score
28 Somewhat Bikeable

Powered by Walk Score

FBI UCR. County-level only.

Quick Facts NCES PSS (SY 2021-22)

Grades
9th – 12th
Enrollment
275
Gender Split
0% M / 100% F
Student-Teacher Ratio
6.9:1
Teachers (FTE)
40
Type
private
Coed Status
all-girls
Affiliation
Roman Catholic
School Day
7 hours
Days Per Year
180 days
Setting
Large Suburb
County
NASSAU
Data Year
2022–2023

How We Rate Schools

Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.

Read our full methodology

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