Chaminade High School is a Roman Catholic college preparatory high school for young men. Located in Mineola (Mineola, New York), New York, the school was founded in 1930 by the Society of Mary (Society of Mary (Marianists)) (Marianists), an international Roman Catholic teaching order of priests and religious Brothers. The school is named for Father William Joseph Chaminade, S.M. (1761-1850), who founded the Marianist order in 1817, and who was beatified by Pope John Paul II in 2000. The school continues to be operated by the Marianists and is independent of the Roman Catholic Diocese of Rockville Centre. The school has a student body of slightly over 1,700 who come from Long Island (Nassau and Suffolk Counties), and neighboring New York City. The administration and faculty consist of both Marianists and lay men and women.

Students follow a liberal arts curriculum, including four years of Religion, English, Social Studies, Foreign Language (either Spanish, French, German, or Latin), Mathematics, Science (Earth Science or Oceanography, Biology, Chemistry, and Physics), as well as one year of Music Appreciation, one year of Health, and one year of Art. In senior year, students take an additional (advanced) year of either Art or of Music. For highly achieving students, there is the opportunity to enroll in a full year of collegiate study during their senior year, which is conducted on-site at Chaminade by professors from Long Island University. Chaminade is known for its rigorous academic program, and average SAT scores are consistently well above the national average. Historically, 100% of Chaminade graduates are accepted into college, and each year over 99% of them chose to attend college. In 2009, all 374 graduates were accepted into college, with 242 offered scholarships or grants.

Chaminade has an extensive selection of co-curricular and extra-curricular activities, with over 90% of the student body participating in at least one activity. Additionally, more than 50% of the student body participates on at least one interscholastic athletic team. The schools athletic teams are nicknamed the Flyers, honoring the fact that at the time of Chaminades founding, Mineola and the surrounding communities of Long Island were part of what was then a "cradle of aviation (Cradle of Aviation Museum)", with such pioneering aviators as Charles Lindbergh, Wiley Post, and Amelia Earhart making world-record flights from nearby Roosevelt Field (Roosevelt Field, New York). In line with Chaminades chosen nickname the school newspaper is, appropriately, called Tarmac, a term for airport pavement (tarmac).