I don't think there is something wrong with you I just think you're a late bloomer. Which is great because the later the better because puberty suck! I suggest you are to go to your doctor though to make sure<span />
While the answer is false...there is an actual medical condition that does make it were an individual can not go through puberty beyond the age of 12 and 16.
The Syndrome is called "Kallmann Syndrome" it means an individual has a condition where they are late in their puberty or are absent meaning they cannot go through puberty. The conditioned is diagnosed when you have no Sexual drive, no body changes like breast growth or body hair and even no voice change
This is due to a lack of Estrogen (Female Hormone) or Testosterone (Male Hormone) in the body
Hope this answers helps and maybe you can tell your teacher this....after all we all learn somthing everyday
