I recently took my 16 yr/5 month son for his sports physical. Doc told us he has no idea how tall he will end up as he is jumping growth curves. Three years in a row of 3 inches per year, and is now a bit under 6" 2'.
Docs comment was that even tall kids normally pick a growth line and follow it.
I'm sure he isn't the first to do this... How did it play out with your own son if thats what happened.
TIA