The New Jersey State Referee Committee (NJSRC) administrates classes which certify and register successful attendees to become a USSF referee. The USSF has a referee grading system which specifies what level games the referee may officiate. In New Jersey you may become a new referee at either the Grade 9 or Grade 8 level. A Grade 9 referee can officiate recreational games; generally recreational games are small sided, "in-town" games played by younger players. A Grade 8 referee can officiate all youth games. The Grade 9 course is NOT required before taking the Grade 8 course.
Course requirements and dates are available at the New Jersey State Referee Committee website.