The Pennsylvania Interscholastic Hockey League released their new realignment for the 2017-18 season. The league moved to the system a few years ago to foster parity among the teams.
http://pihlsite.pointstreaksites.com/view/pihlsite/pennsylvania-interscholastic-hockey-league-2/league-news/news_490205
http://pihlsite.pointstreaksites.com/view/pihlsite/pennsylvania-interscholastic-hockey-league-2/league-news/news_490205