[10] The Mount Olive High School Marauders[2] compete in the Northwest Jersey Athletic Conference, which is comprised of public and private high schools located in Morris, Sussex and Warren counties, operating under the supervision of the New Jersey State Interscholastic Athletic Association (NJSIAA).

[14] The football team competes in the Freedom Blue division of the North Jersey Super Football Conference, which includes 112 schools competing in 20 divisions, making it the nation's biggest football-only high school sports league.

[17] Students are eligible to participate in interscholastic sports offered in the fall, winter, and spring seasons.

[23] The team has won the North Jersey sectional title 11 times in their history starting with five in a row from 1977 - 1981.

[24] The soccer team won the North I, Group III state sectional championship in 1999 with a 2–1 win against Northern Highlands Regional High School in the tournament final.

[31] The following season, in 2013, the Marauders made it to the Morris County Championship once again, this time defeating Chatham High School.

The 2014 team went on to another MCT Championship with a victory over Morristown, being told as the greatest basketball game ever in Morris County history.

The ice hockey team won the Haas Cup in 2014 with a 3-2 overtime win against Madison High School in the championship game.

Members have sung with Essential Voices USA at Symphony Space in NYC for a concert tribute to Leonard Bernstein as well the New York Pops at Carnegie Hall presenting a program featuring the music of Lerner and Loewe.

The MOHS Concert Choir has sung on the PBS special Celebrate America with composer Tim Janis which aired in March 2010.

[34] In November 2011, members sang with Neil Diamond at the Rockefeller Center tree lighting ceremony on NBC Television as part of EVUSA.

[35] The Mount Olive High School Drama Club competes in the Bucks County Playhouse competition annually as well as performing two shows a year.

In 2013, the decision was made to leave the United States Scholastic Band Association, and take a more independent track.

Students who move through the various courses within the department routinely get accepted to some of the best art schools in the country including SCAD, RIT, Pratt Institute, and [./Https://moore.edu/ Moore College of A&D].

Recently, the multiple art schools that are invited to jury the show have increased the amount of scholarship money they offer at the Exhibition to exceed a potential total of over $1 million.