The average 8th grader is about 12-13 years old. However one can be pretty much any age as long as they meet the requirements. Kids can skip grades and be held back.
Well where I live you have to be 13 by like September 1...and by the start of ninth grade you have to be 14 :)
Gorge is a cheater
I am starting 8th grade and I am 13 years old. Kids who are 13 or 14 are in 8th grade
13 14 no one is 12 unless they went to school early