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
Rank in Judo a patch specifying the practitioner's level. This is true for both "kyū" and "dan" levels. The USJF Juniors ranking system specifies ranks to 11th "kyū" ("jūichikyū"). The USJA Juniors ranking system specifies twelve levels of "kyū" rank, beginning with "Junior 1st Degree" (equivalent to "jūnikyū", or 12th "kyū") and ending with "Junior 12th Degree" (equivalent to "ikkyū"). As with the senior practitioners, the USJA recommends that juniors wear a patch specifying their rank. When a USJA Junior reaches the age of 17, their conversion to Senior rank is: Rank in Judo In Judo, improvement and understanding of the art is