My pre teen research

So i was looking at the average body weight of a pre teen and saw this "am i fat i am 5'2 and 12 Turing 13 and i was wondering if 180 is the average body weight for my size? PS i have big bone structure"
AH LA VACHE! OMG in french
There is no such thing as big bone structure who does she think she is big bone structure!