The school was founded in 1923 by the Marist Brothers, a religious order of the Catholic Church. It is named after Aloysius Gonzaga, a 16th-century Italian Jesuit saint.
St. Aloysius School serves students from pre-kindergarten through twelfth grade. The school offers a rigorous academic curriculum, as well as a variety of extracurricular activities, including sports, clubs, and community service.
St. Aloysius School is known for its strong sense of community and its commitment to academic excellence. The school has been recognized by the New York State Education Department as a "School of Distinction."