Well that will vary from horse to horse no matter how good the training. The best way to find out is to free jump the horse and continue to raise the jump until it's clear how high the horse can jump without problems.
They are About 15 hands high (150cm/60 inches).
The Arabian
The average horse is about 15-16 hands high.
Something quiet, like a Quarter Horse. Nothing like a high-strung Arabian or Thoroughbred.
No they did not. Horses can be trained to do almost anything. Including playing dead. It was a well played out scene in "High Plains Drifter" with a well trained horse. If you noticed in the scene, once the gun is shot there are a few seconds before the horse reacts
They normally stand about 14.1 - 15.1 hands high.
A horse called High Tower as trained by master Rex Peterson who also trained Doc's Keepin' Time (Black Beauty). High Tower also starred in The Horse Whisperer as Pilgrim and Runaway Bride as Julia Roberts' escape horse! A beautiful chestnut.
Spooking does not matter hoe high a horse can jump. If a horse has jumped over fences and has been trained you will be able to have your horse jump higher in competition.
The Arabian horse is the breed that has one less vertebra in its backbone compared to other horses. This unique anatomical feature is believed to contribute to the breed's distinctive high tail carriage.
The Arabian has a very large variation in height. The breed itself can each 16 hand, but that is far from the norm. They rarely see 15 hands. The site I have below is from Arabian horse association. It tells you a great deal about the breed. They are quite beautiful and very high strung.
I'm no expert, but they have delicate facial features, kind eyes, a dished face and a high tail carriage.
It cannot jump as high as the fence is, but you can train the horse to jump, but some horses just arent good at it, so dont push your horse to hard.