 Schooldigger.com ranked the school tied for 109th out of 381 public high schools statewide its 2011 rankings (an increase of 35 positions from the 2010 ranking) which were based on the combined percentage of students classified as proficient or above proficient on the mathematics (85.9%) and language arts literacy (96.4%) components of the High School Proficiency Assessment (HSPA).The Mount Olive High School Marauders compete in the Northwest Jersey Athletic Conference, which includes of high schools located in Morris County, Sussex County and Warren County, operating under the supervision of the New Jersey State Interscholastic Athletic Association (NJSIAA).With 1,109 students in grades 10–12, the school was classified by the NJSIAA for the 2015–16 school year as North I, Group III for most athletic competition purposes, which included schools with an enrollment of 786 to 1,074 students in that grade range.