Dan (rank) highest level that might be attained, with instructor certification and judge/judgment authorization being understood as higher-level or more sophisticated. Many arts use between one and ten dan ranks: In some martial arts, black belts are worn for all "dan" grades. In others, the highest grade (10th "dan") wears a red colored belt. In Jūdo and Shotokan 6th to 8th "dan" may wear a red and white-patterned belt and 9th to 10th "dan" may wear a solid red belt. There is some variation even within styles. Generally, belts do not have markings that indicate the actual "dan" grade. Okinawan styles used
Judo in Canada by the National Grading Board. Most of the responsibility for grading, however, is delegated to other organizations. All "kyū" grade promotions are based on examination at the student's club by the club's head instructor or grading board following the Judo Canada grading syllabus. "Shodan" (first "dan") to "hachidan" (eighth "dan") promotions are based on examination by a provincial or territorial grading board, and must be ratified by Judo Canada. "Kudan" (ninth "dan") and "judan" (tenth "dan") promotions are rare honours that are conferred directly by Judo Canada, the International Judo Federation, or the Kodokan. The time between promotions for "kyū"