minimum height of show jumping horse

Question
hello, for a thoroughbred horse to be eligible to become a show jumping horse, how much minimum height it should be? i mean, 15hh or 16hh.

Answer
Think more of conformation and correctness of movement, especially if you are of regular height.

When I was in England many years ago there was a pony named Stroller ridden by Marion Coakes who won many many jumping competitions including international ones against large horses.
You could not even see him coming untill he was over the fence.

Sometimes a relaly large horse is a bit clumsy.....other huge horses have been quite successful..(Milton, Snowman).

Look for natural ability and movement and DISPOSITION!!!

....willingness to jump.