The Villa Walsh Academy Vikings participates in the Northwest Jersey Athletic Conference, which is comprised of public and private high schools in Morris, Sussex and Warren counties and was established following a reorganization of sports leagues in Northern New Jersey by the New Jersey State Interscholastic Athletic Association (NJSIAA). Before the NJSIAA's 2010 realignment, the school had competed in the Northern Hills Conference an athletic conference comprised of public and private high schools located in Essex, Morris and Passaic counties. With 304 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 37 to 366 students in that grade range (equivalent to Group I for public schools).