Sport in Ireland sizeable following in Ireland. The governing body is Horse Sport Ireland (formerly the Equestrian Federation of Ireland), which is composed of 15 Irish affiliate bodies, representing all facets of equestrian sport. These sports include show jumping, eventing, dressage, endurance riding, para-equestrian, polo and carriage driving. Overall administration of Irish horse-racing is carried out by Horse Racing Ireland. Horse Racing Ireland is responsible for racing in both the Republic of Ireland, which has 24 racecourses, and in Northern Ireland, which has 2 racecourses. Ireland's top tracks are the Curragh and Fairyhouse. The breeding industry (including the world's largest thoroughbred breeding operation;
Para-equestrian classification a target score "based on the average overall scores that achieved medals in each grade at the 2010 World Equestrian Games". For Grade 3 classification, the percentage was 70.88%. Grade 4 (Grade IV) Para-equestrian classification is defined by "BBC Sport" as follows: "Grade 4 incorporates Cerebral Palsy, Les Autres, Amputee, Spinal Cord injury and Visually Impaired. This last group comprises ambulant athletes with either impaired vision or impaired arm/leg function. " In 2008, "BBC Sport" defined this classification was "Grade 4: Ambulant athletes (those able to walk independently) with either impaired vision or impaired arm or leg function" In 2011,