The sizes of a high school basketballs are: size 7/ 29.5 inches (74.9 cm) for boys and size 6/ 28.5 inches (72.4 cm.) for girls.
boys- i dont know but i know its bigger you stink
28.5. Guys are 29.5, but I've played with a 30.
girls: 28.5 cm boys: 30.5 cm
most are the same but it depends in what distric and type of basketball your school plays.
A standard high school court is 84 feet by 50 feet.
That depends what school you are going to and if your school has a gym.
There are two sizes of basketballs used at the high school level. Size 6/ 28.5 inches around for women, and size 7/ 29.5 inches around for men.
The size of a middle school basketball is 29.5 inches.
Throughout middle school, high school, college and professional basketball, the backboards are the same size. They are also the same distance off of the floor at 10 feet.