There are children size balls, than women's and then men's so it depends on weather your asking about men or women.
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.
size 29
12 playas
yes
A standard high school court is 84 feet by 50 feet.
The typical size basketball used for middle school basketball games is a size 6 basketball.
That depends what school you are going to and if your school has a gym.
If your a TRUE basketball player, you should automatically be able to tell if it is a 29.5 (size 7) basketball, BUT, if not, you can ask the person in the store, or it should say size 7 somewhere on the ball.
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.
Middle school basketball typically uses a size 6 basketball.
A standard High School court is 84' long x 50' wide Junior High is 74' L x 42'W
The regulation size for basketball nets are all the same at ten feet. The regulation for high school, college, and the NBA/WNBA use nets that are ten feet high.