What is classical dressage versus modern sport dressage?

The distinction between classical dressage and modern sport dressage describes a genuine and significant divergence in approach, values, and aesthetic that has become one of the most discussed topics in the contemporary dressage world. Classical dressage refers to the tradition transmitted through centuries of European academic horsemanship — through the riding masters from de la Guérinière through Steinbrecht, through the Spanish Riding School and the Portuguese School of Equestrian Art, and through contemporary practitioners like Nuno Oliveira and his students — that emphasizes the horse's lightness, self-carriage, and genuine collection as the measures of advanced training. In this tradition, the horse carries itself with a natural balance that frees the forehand, the contact is light and elastic because the horse genuinely maintains its own balance rather than leaning on the rider's hand, and the advanced movements emerge from genuine collection rather than from the rider's physical management. Modern sport dressage, as expressed in the contemporary international competition circuit, has in many practitioners' view diverged from these classical ideals in the interest of producing the spectacular expression and dramatic gestures that attract high scores in competition — a trend that critics argue has produced horses with exaggerated movement and flashy appearance that is achieved through physical management rather than genuine collection, and has normalized training methods including rollkur and hyperflexion that classical practitioners consider detrimental to the horse's welfare and contrary to the discipline's foundational values. The debate between these perspectives reflects genuine disagreement about what dressage is ultimately for and what the horse's experience during training should be.