The everage weight of and eight graderfor the girl around 100 pounds and for boy around 115 pounds This is if you are under 5'5''. If you are over that it will definatily be more.
that person is not right at all! maybe the average 7th grader is 100 pounds, but not eighth grader. I would say that the average 5'3 eighth grader is atleast 105 pounds. that person can't even spell "average", so I wouldn't go by their information.