@indigomoth - It works both ways. You can be an early bloomer, or one of those kids who waits and waits to shoot up a few inches while everyone else is growing like sunflowers.
I don't remember any height issues but I was mortified that it seemed like every girl in class had hit puberty before I did. They were all discussing things that I had no clue about, like periods and sex and bras, and in fact everyone was wearing a bra in the changing rooms before I was (or at least it seemed like that!).
I think though that every kid that age thinks they are the odd one out in some way. Mostly they are all too worried about their own weirdness to worry about anyone else!