Our Lady of Mercy Academy, also referred to as OLMA, was a private Catholic College preparatory school for young women, founded in 1928 in Syosset, NY.

In the fall of 1928, 11 students were enrolled in Our Lady of Mercy Academy, originally created as a boarding school for young women.

[3] The school was involved in food stamps, rationing, victory gardens, air raid drills, and two hours of weekly instruction in First Aid.

[3] Advanced placement courses, college affiliation classes, computer labs, Internet access, on-line databases and a completely automated library media center, all indicate that OLMA has progressed from those early 20th century years with 11 students, 5 faculty and a Regents approved curriculum for the times, to the threshold of the 21st century with 500 students, 69 faculty and staff, and a curriculum providing access to all colleges and professions, and preparing women with a Catholic, value-centered future.

[3] In keeping with these early roots, the sisters envisioned a Georgian structure whose main entrance on Syosset-Woodbury Road would be enhanced by a tall-pillared portico with graceful Doric columns.

[3] The distinguishing feature of the building is the colonial tower rising 117 feet and patterned after Independence Hall in Philadelphia.

[3] Our Lady of Mercy Academy covers 96 acres including wide, rolling natural spaces.

[3] The Science and Art Departments use the grounds for extended classroom instruction and experimentation, including our Arbor Day ceremony of planting memorial trees.

[4] In July 2021, the Our Lady of Mercy Academy gymnasium floor was named in honor of Karen Andreone, who spent 33 years at the school in roles including athletic director, physical education teacher, and coach for volleyball, badminton, and softball.

[16][17] Programs for students are planned to meet and exceed the requirements of the New York State Education Department.