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.
How Old Do You Have To Be In The 8th Grade?
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