Catholic School CompassTrue north for Catholic families.
Aerial view of Our Lady of Mercy Academy
Aerial imagery: U.S. Geological Survey (public domain). USGS

Catholic high school

Our Lady of Mercy Academy

  • LocationSyosset, NY
  • Type and sizeIndependent Catholic school · Grades 9–12 · 195 students

All-female

This school’s faith scorecard hasn’t been researched yet. We research from official sources only, starting with the largest schools, and we never guess.

Know the official campus ministry or Mass schedule page? Send us the link.

Catholic churches nearby

Map of Our Lady of Mercy Academy, its Catholic center and nearby Catholic churches0.25 mi0.5 mi1 miSt. Edward's Church: 1.0 mi1Our Lady of Mercy Academy (campus)N0.25 mi
CampusCatholic church (numbered below)Open a street map ›
  1. St. Edward's Church — 1.0 mi · 205 Jackson Avenue, Syosset

Within 3 miles, as mapped by OpenStreetMap contributors. The map may be incomplete. Confirm with the parish or diocese.

My rating and notes

Sign in or create a free account to rate this school privately, keep notes, and save it to your list.

Academic Excellence

AAcademic Excellence: Strong (grade A): 85 to 100 points out of 100 on what official sources document. Grades need sources for at least 60% of the checklist.
100 of 100
From federal data, on fixed published scales.

Each measure counts for the share shown.

  • Graduates going to four-year colleges 75% of scoreThis measure counts for 75% of the Academic Excellence score.100%
  • Students per teacher 25% of scoreThis measure counts for 25% of the Academic Excellence score.7.1 to 1

Bars show points on each measure’s scale. How Academic Excellence is computed. Federal data on private high schools is limited to these two measures.

Source: NCES Private School Survey (2023–24 school year)

School facts

TypeIndependent Catholic school
DioceseDiocese of Rockville Centre, NY
Grades9–12
Students (all grades)195
Students in grades 9–12195
Coed or single-sexAll-female
Student–teacher ratio7.1 to 1
Graduates going to 4-year colleges100%
SettingSuburb

Source: NCES Private School Survey 23-24 public-use file (school year 2023–24). The college-going rate and student–teacher ratio feed Academic Excellence; nothing here changes the faith grades.

Local Church

Diocese of Rockville Centre

The Most Reverend John O. Barres, Bishop of Rockville Centre

Formal address: “Your Excellency”

Source: drvc.org, verified Oct. 7, 2026.

About this school’s data

Questions families ask

Is Our Lady of Mercy Academy a Catholic high school?
Yes. Our Lady of Mercy Academy is a Catholic high school in the Diocese of Rockville Centre.

Reviews

Personal experiences from signed-in readers. Reviews are moderated automatically and never change a school’s grades.

No reviews yet.

Sign in to write a review.

More in New York · New York rankings