sentences:  The tests must all be completed in progression, however the E and B+ tests are optional.The Riding and Road Safety Test also must be completed which ensures that members have the necessary knowledge to ride a horse or pony on the road.The B Standard Test demonstrates a high level of riding and horsecare and the A Test is thought of highly by employers in the horse industry as the holder of an A Test certificate has proven to have an extremely high level of riding and horsemanship.