The program of studies offered at DePaul Catholic High School seeks to equip college-bound students with a foundation for the pursuit of academic excellence while emphasizing a curriculum tailored for individual differences. Students learn to apply their knowledge and training toward their ongoing development of the Whole Person. DePaul Catholic is a college preparatory high school offering advanced placement, honors, college prep, and foundations levels of study. In the Class of 2015, 98% of graduates are attending colleges and universities. Graduates in the Class of 2015 were awarded over $10.5 million in academic merit-based scholarships, and 99% of the graduates have gone on to colleges, universities, and technical schools. All students and faculty use Tablet PC laptop computer/notebooks connected using a wireless Internet system.
Athletics
The DePaul Spartans competes in the Big North Conference, following a reorganization of sports leagues in Northern New Jersey by the New Jersey State Interscholastic Athletic Association. Before the NJSIAA's 2010 realignment, the school had competed in the Northern Hills Conference an athletic conference made up of private and public high schools located in Essex, Morris and Passaic counties. There are over 20 varsity sports for boys and girls in the school. The athletic director is Joe Lennon. The mascot is the Spartan and the colors are green and white. The sports teams that are available include: Boys - baseball, basketball, bowling, cross country, football, golf, ice hockey, lacrosse, skiing, soccer, swimming, track and field, winter track, volleyball, wrestling; Girls - basketball, bowling, cheerleading, cross country, golf, lacrosse, soccer, softball, skiing, swimming, track and field, volleyball, dance team, winter track. 23 varsity teams for boys and girls and 30 extracurricular activities are offered. DePaul participates in a joint cooperative ice hockey program with Morris Catholic High School as the host school / lead agency under an agreement that expires at the end of the 2017–18 school year. The football team was awarded the sectional championship by the New Jersey State Interscholastic Athletic Association in 1962 and 1972. Since the playoff system was introduced in 1974, the team has won the Non-Public A sectional title in 1975, the Non-Public B North state sectional championship in 1992 and won the Non-Public II state title in 2013, 2014 and 2015. In 2017, facing a Saint Joseph Regional High School team that had won the previous 13 games between the two teams, top-seeded DePaul won the Non-Public Group III state sectional championship by a score of 7–3 over third-seeded Saint Joseph in the tournament title game played at Kean University's Alumni Stadium. The boys' cross country team won the Non Public B state championship in 1966. The field hockey team won the Parochial A North state sectional title in 1982, and went on to win the Parochial A state championship that year, defeating Holy Spirit High School in the title game. The softball team won the Non-Public A state championship in 1984 and won the Non-Public B title in 1985. The wrestling team won the Parochial B North state sectional title in 1993, and won the Non-Public B North sectional title in 2010, 2011, 2012, 2013 and 2014. The team won the Parochial B state championship in 1993 and the Non-Public B state title in 2014.
Stand Tall
85% of students and staff are members of "Stand Tall", DePaul's voluntary drug prevention program, which offers voluntary and school-sponsored, drug testing for students and staff.