6 to 18 years School age is up to 18 but nobody pays attention to the fact that after the age of 8 it is called adolescence.
36
The average age of child soldiers tends to be around 13 to 18 years old, but some can be recruited as young as 7 or 8 years old. These children are often forced to join armed groups and participate in conflict situations against their will.
There is no average IQ for any age.
Age 3.
9
This would be very hard to find out unless you knew the age of every child in the world.
The average age a child can begin using scissors is suggested to be age two. At age two a child needs to learn how to build up muscles in the palm of his/her hand and start using eye/hand coordination.
the average age is about 11 or twelve...when you hit puberty
23
The grade does not matter it is the average height and the age of the child that determines there weight.
The average IQ for anybody, any age, is 100.
It depends on your area. For example, in California the average age is around 22. In some parts of the world the average could be 28, 19, or even in the 30s.