The Math League, the school's largest student club with over 300 members, holds six competitions throughout the year. CHS students have regularly placed well in New Jersey Math League competitions. The CHS Mock Trial team has been active for many years and ranks as one of the best mock trial teams in Union County. The mock trial team has won over a dozen county championship. Their newest victory was the Union County Mock Trial Finals in 2011. The CHS Forensics Team has been ranked as a top team in New Jersey and has competed in the New Jersey Catholic Forensics League and has sent several students to national competitions.