The National Federation of State High School Associations approved the change of 10 of the sport's 14 weight classes, the most significant weight class changes in high school wrestling in 23 years.

The new rules will go into effect at the start of the 2011-12 season.

The 14 weight classes approved by the committee are as follows: 106 (pounds), 113, 120, 126, 132, 138, 145, 152, 160, 170, 182, 195, 220, and 285 .

The last time a large change occurred in weight classes was in 1988, when the lowest weight was increased from 98 to 103 pounds. In 2002, the number of classes went from 13 to 14, and in 2006, the 275-pound class was increased to 285 pounds.

Another major change involves the mat boundaries, which states the 2-inch-wide line surrounding the wrestling circle is now considered inbounds.