[15] The Marist High School Royal Knights / Lady Knights[3] competed in the Hudson County Interscholastic League, which is comprised of public and private high schools in Hudson County, and operates under the supervision of the New Jersey State Interscholastic Athletic Association (NJSIAA).

[17] The 1994 football team, led by coach Gene Pagnozzi, won the NJSIAA Non-Public Group II state sectional title with a 16–13 victory against Gloucester Catholic High School in the championship game played at Giants Stadium.

The girls' basketball team won the Non-Public Group B state championship in 2001, defeating Sacred Heart High School in the tournament final.

[20] During his 19 seasons, girls basketball coach Bill Defazio won four sectional titles, including in 2008 against Gill St. Bernard's School in the finals of Non-Public B North B tournament.

[21] The boys basketball team won the Non-Public Group B state championship in 1992, defeating Eustace Preparatory School in the finals.

Students (in as early as their Freshman Year) can obtain college credits by taking Advanced Placement classes offered at Marist.