Kellenberg Memorial High School was established by the Society of Mary (Marianists) to continue the long Marianist tradition of Catholic education on Long Island. The school is named in honor of Most Rev. Walter P. Kellenberg, the founding Bishop of the Diocese of Rockville Centre, whose deep devotion to the Blessed Virgin Mary and steadfast support of Catholic schooling left a lasting legacy throughout the diocese.
Owned and directed by the Province of Meribah of the Society of Mary, Kellenberg Memorial embodies the Marianist commitment to forming young people in faith, intellect, and character. The Marianists—founded in 1817 by Blessed William Joseph Chaminade—seek to educate youth in the Gospel message of Jesus Christ through community life and the imitation of Mary, Mother of God.
In September 1988, Kellenberg Memorial extended its apostolate by creating a middle-school division, the Bro. Joseph C. Fox Latin School, named for a Marianist who devoted more than fifty years to Catholic education. The Latin School now provides an integrated program for students in grades 6–8, sharing the same mission, campus, and Marianist spirit as the high school.
The school’s motto, “One Heart and One Mind,” expresses the unity of purpose that animates every part of campus life. Its colors—royal blue and gold—and its emblem, the phoenix, symbolize renewal, faith, and perseverance in the Marianist tradition.