How do you school a disobedient horse?

First, you need to figure out WHY a horse is being disobedient. Often times, we mistake a horses behavior as disobedience when he is actually trying to tell us something, "Hey I'm in pain," or, "Hey, I'm bored," Or, "I don't understand you." but instead of listening to them, we hit them, smack them around, "discipline" them, but that is not at all what needs to be done, so trust is damaged and the horse will not enjoy being around you.

I or someone else could help you more if you would specify what your horse is doing that you consider "disobeying"