its a matter of time...that you will grow tall.
when i was sec1, i was the shortest in my class.
during that time, i was only 140++, sec4, i growed to 161++ taller than most of the girls le.
161 for 16 is still a little short though.

the HPB doctor say i having slow puberty, hence thats why. if you are like me, chances u will grow taller, but slower(later time) than other ppl.
i got a friend who is really short and his puberty stage already passed...(he have lots of hair on his leg!) for him, i think he gone case...becuz both his parents are quite short, hence maybe causing him oso to be short...his elder sister oso very short.