girls: 28.5 cm boys: 30.5 cm
Girls Basketball always use 28.5 Boys Basketball uses 28.5 up until 7th grade. In 7th grade through NBA ball a 30.1 is used.
The size of a middle school size basketball is 19.5 diameter.
The size of a middle school basketball is 29.5 inches.
Yes. The school in my town has soccer, basketball, and volleyball. It depends on the school.
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.