Basketball courts vary in size among the National Basketball Association, the International Baskeball Federation and high school, but all have the same standardised hoop height. Interestingly, the official ring height has remained unchanged in over 100 years of basketball's history.
The official rim height, as used by the NBA, NCAA and WNBA, is 120 inches (10 feet). This was the height of the first peach basket "nets" nailed to an indoor, elevated running track by basketball inventor, James Naismith.
While the WNBA currently uses the standard height of 10 feet, there is debate over lowering the height. Supporters for lowering the rim to 9 feet argue it would increase scoring and, therefore, interest in the WNBA.
Although 10 feet is the standard height for basketball hoops, this height would prove discouraging to most children learning to shoot baskets. Because of this, hoops for children ages 5 to 9 are sometimes set at 7 feet, 6 inches. A height of 8 feet, 6 inches can be used for children ages 10 to 12. Lowering the goal aids in the development of proper shooting technique.