Founded in 1962, St Joseph High School was run by the Marist Brothers and the School Sisters of Notre Dame.[3] The following individuals have served as principals: Brother Edward Caffrey, Monsignor Richard Shea, Richard Bishop, Matthew Kenney, Kenneth Mayo, James P. Keane, and Nancy DiBuono (current principal).[4]
St Joseph High School offers Mass each day in the Alumni Chapel located on campus.[5] The school also boasts a full-time Chaplain, Fr. Férry Galbert.[6] All students of St Joseph High School, regardless of religion, are required to take Catholic religion classes all 4 years.
St Joseph High School is part of the Fairfield County Interscholastic Athletic Conference (FCIAC). The school fields 49 teams in 19 sports, including cheerleading, cross country, field hockey, football, soccer, swimming and diving, volleyball, basketball, bowling, ice hockey, indoor track, wrestling, baseball, golf, lacrosse, outdoor track, softball, and tennis. The school also participates in co-op Teams with Trumbull High School for swimming and diving, ice hockey, and gymnastics.[8] Since 1975, SJ athletic teams and individuals have won more than 100 championships.[9]
In 2019, the St Joseph High School varsity football team became the first team to win three different class championships (Class S, Class M, Class L)[expand acronym] in three consecutive years.[10]
In 2021, the St Joseph High School boys varsity golf team won both the Division III state championship during the spring season and the Division II state championship during the fall season after the state boys golf schedule was reorganized.[11][12]
In 2023 The Girls Soccer Team completed an undefeated season and took home their second straight FCIAC title third straight state [13] and finished the season ranked #6 in the country.[14]