In 2004, the United States Tennis Association adopted a Point Per Round Ranking System (PPR) to rank American juniors. Ranking Point Tables contain the points earned for wins at National Ranking Tournaments, which include all tournaments on the National Junior Tournament Schedule (NJTS) as well as 12 Section tournaments designated by each USTA Section. While minor adjustments have been made to the Point Tables periodically since 2004, effective January 1, 2012 the Tables will be substantively changed.