This is a concise exposition of the principles and practice of schooling horses in the classical tradition. Although the system described should appeal particularly to dressage enthusiasts, it can be employed by any rider who wishes to develop riding skills and a horse's potential. Based on the author's observations of the world's top trainers, the system described aims to make the horse more versatile and obedient. Topics discussed include the essentials of riding and training, balance, resistance, progressive lateral work, flying changes, the extremes of collection, training procedures, remedial schooling and influential riding masters.