Syosset Senior High School
Public · Grades 9–12 · 2,400 students
Our Lady of Mercy Academy
815 Convent Rd, Syosset, NY 11791
Grades
9–12
High
Students
195
Enrolled 2024–25
Students per teacher
7.1 : 1
Full-time teachers
District
Catholic School
Nassau County
About Our Lady of Mercy Academy
Our Lady of Mercy Academy is a high school in Syosset, New York, serving grades 9–12. The school is located in a large suburb in Nassau County.
In the 2024–25 school year, 195 students were enrolled, with about 7.1 students for every full-time teacher. That ratio is smaller than the typical New York high school (10.7 students per teacher). It is affiliated with the Roman Catholic tradition.
Grades
PKK123456789101112
Highlighted: grades offeredGrades 9–12
Location & nearby schools
School details
- Type
- Catholic School · What this means
- Religious affiliation
- Roman Catholic
- Students
- All-girls
- Level
- High
- Grades offered
- 9–12
- Enrollment (2024–25)
- 195 students
- Students per teacher
- 7.1 to 1
- Locale
- Suburb — Large
- County
- Nassau County
- NCES private school ID
- 00930411
Schools near Our Lady of Mercy Academy
All 13 schools in Syosset →
Harmony Heights School
Private · Grades 8–12 · 55 students
Walt Whitman High School
Public · Grades 9–12 · 1,939 students
Plainview-Old Bethpage/Jfk High School
Public · Grades 9–12 · 1,720 students
Cold Spring Harbor High School
Public · Grades 7–12 · 719 students
Jericho Senior High School
Public · Grades 9–12 · 1,260 students
School data comes from the U.S. Department of Education: the National Center for Education Statistics (NCES) Common Core of Data and EDGE school locations (2024–25) and Private School Survey (2023–24), the Civil Rights Data Collection (2023–24), and EDFacts (test results 2021–22; graduation and chronic absenteeism 2022–23), plus other public sources. Please contact the school to confirm enrollment, programs, and other details. How we source data.