What is the average weight for a ninth grader?

well the weight of a ninth grade boy should probably be around 120-135 and the weight of a ninth grade girl should be 110-120 no more but if u are taller than 5'9'' then it will be more obviuosly.
180
5'8.5" for guys and 5'5" for girls
about 155 pounds for boys and 120 pounds for girls