What is the regulation height of a high school basketball hoop?

The regulation height of basketball hoops at the high school, college and professional levels is 10 feet from the top of the rim to the playing surface below. Rims are 18 inches in diameter, and centrally placed below a 24-inch by 18-inch inner square on a 72-inch by 42-inch backboard.

Most high school basketball courts measure 84 feet in length and 50 feet in width, with the division or mid-court line dividing the court equally. The free throw line is placed 15 feet from the front of the backboard, which typically extends 4 feet in from the baseline, while the three-point arc is 19 feet, 9 inches from the basket.