The Our Lady of Mercy Academy Villagers compete in the National Division of the Cape-Atlantic League, an athletic conference comprised of public and private high schools located in Atlantic, Cape May, Cumberland and Gloucester counties that operates under the supervision of the New Jersey State Interscholastic Athletic Association (NJSIAA). With 216 students in grades 10-12, the school was classified by the NJSIAA for the 2019–20 school year as Non-Public B for most athletic competition purposes, which included schools with an enrollment of 77 to 366 students in that grade range (equivalent to Group I for public schools).