2010. The main impetus for realigning the league's listed below into six superconferences with multiple divisions each was to defuse tension between public and private schools in the area, which had risen to the point that the public schools attempted to force the private schools into their own separate conferences. List of conferences defunct under 2009-10 NJISAA Realignment Bergen County Scholastic League (annexed into Big North and North Jersey in 2010) Bergen-Passaic Scholastic League (annexed into North Jersey in 2010) Colonial Hills Conference (annexed into Northwest Jersey and Super Essex in 2009) Iron Hills Conference (annexed by Northwest Jersey, Super Essex, and Union County in 2009) Mountain Valley Conference (annexed into Super Essex and Union County in 2009) North Bergen Interscholastic Athletic League (annexed into Big North in 2010) North Jersey Tri-County Conference (2009-10 only, annexed into Big North and revived Hudson County in 2010) Northern Hills Conference (annexed by North Jersey Tri-County and Super Essex in 2009) Northern New Jersey Interscholastic League (annexed into North Jersey Tri-County and Super Essex in 2009) Sussex County Interscholastic League (annexed into Northwest Jersey in 2009) Watchung Conference (annexed by North Jersey Tri-County, Super Essex, and Union County in 2009) Technology In 2018, the NJSIAA become the first state governing body to sanction the use of video replay during high school football's regular season. Participation In the 2016-17 season, the NJSIAA featured 283,655 participants, with 57% boys and 43% girls. The sports with most boys are: American football: 24,730 Track and field (outdoor): 20,635 Soccer: 19,683 Baseball: 15,241 Basketball: 15,134 Track and field (indoor): 12,991 Lacrosse: 9,718 The sports with most girls are: Track and field (outdoor): 18,098 Soccer: 14,900 Softball: 12,222 Track and field (indoor): 11,078 Basketball: 10,227 Volleyball: 9,791 Lacrosse: 9,522 References External links NJSIAA official website List of high schools affected by new super conferences alignment High school sports associations in the United States High school sports in New Jersey Youth organizations based in New Jersey Sports organizations established in 1918 1918 establishments in New Jersey