What height should a beginner horse start jumping?

A beginner horse should start jumping at the absolute minimum height that constitutes an actual fence rather than a ground obstacle — typically a cross rail with its intersection at approximately twelve to eighteen inches — because starting as low as possible maximizes the number of successful, confidence-building repetitions before height demands begin to require genuine jumping effort. The logic of starting very small is not that the horse cannot jump higher but that the training value of early jumping comes from the horse developing a positive association with fences, learning the coordination of the jumping effort, and developing its technique — all of which happen most productively when the height is so modest that the horse succeeds effortlessly at every fence. A horse that succeeds at every small fence over many sessions develops confidence that transfers to larger fences; one that struggles with large early fences may develop a defensive relationship with jumping that is harder to overcome than the modest inconvenience of starting very small. The height progression for a beginner horse typically moves from cross rails at twelve to eighteen inches through small verticals at two feet, two-foot-six, two-foot-nine, and eventually three feet across multiple sessions and weeks, with each height increase occurring only after the current height is approached confidently and consistently. The timeline for this progression varies significantly with the individual horse's athletic ability, confidence, and training history — a bold, athletic horse may progress through the lower heights quickly, while a more cautious or less naturally athletic horse may spend more time at each level building confidence before the height increases. The principle that applies universally is that confidence and technique are more important than height progression, and that any apparent backsliding in confidence is a signal to reduce height rather than to push through the problem.