How do dressage trainers assess a new horse and rider?

A dressage trainer's assessment of a new horse and rider pair is one of the most important diagnostic processes in equestrian education, and experienced trainers have developed systematic approaches to quickly identifying the most important things to address rather than being overwhelmed by the many things that any new horse and rider will show that could be improved. The assessment typically begins before the rider mounts: the trainer observes the horse's general demeanor and way of moving in hand, notes any obvious conformation features that might affect training, and gathers history from the rider about the horse's background, any known behavioral or physical issues, and the rider's goals and experience. Once mounted, the trainer typically asks the rider to warm up as they normally would — observing their default habits without instruction before intervening — because this reveals both what the rider has been doing and what results that approach has been producing. The trainer simultaneously assesses the horse: its natural gaits, its response to the rider's existing aids, any specific resistances or evasions that are already established, and its general attitude toward work. Most experienced trainers can identify within the first few minutes of observation the most significant issues — whether they are primarily position-based in the rider, training-based in the horse, or both — and make a judgment about where the most productive starting point is. A complete assessment typically includes seeing the horse ridden in all three gaits on both reins, through transitions, and on circles and straight lines, which together provide enough information to identify the primary training priorities and the most productive approach to addressing them. The trainer may also ride the horse themselves during the assessment — to feel directly what the horse is doing rather than only observing it — which is standard practice for many trainers when assessing a new pair.