traditional belt ranking system for Korean Martial Arts: White (10th to 9th geup rank) Orange (8th to 7th geup) Green (6th to 4th geup) Red (3rd to 1st geup) Midnight Blue (1st to 3rd dan rank) Midnight Blue with Central Red stripe (4th dan and above) Note that for some Dojang, a grading system using a Yellow belt prior to orange belt may be employed, especially for the younger practitioners. After a participant earns their Cho Dan, (First degree midnight blue), they receive a Don Bon number. This is an ID number used across the globe in Soo Bahk Do. A practitioner holds onto their Dan Bon even after they stop training, and it marks them in the timeline of Soo Bahk Do. As of 2019 50,000 Dan Bon numbers had been issued. Instructors Soo Bahk do has three different levels of instructors. The first is Jo Kyo, meaning assistant instructor. To become a Jo Kyo, a practitioner must be at least a 1st gup and study for at minimum 90 days. They are required to complete a written test and spend a certain number of hours assisting with classes. Leading activities such as warm ups, new material, and assisting students of all ranks is a major part of the work hours needed. The second level of certification is Kyo Sa. To become a Kyo Sa, a practitioner must be at least a 2nd Dan and over 18 years of age. They are required to study for at least one year, teach classes to students of all ranks, and complete a written test. The 3rd level of certification is Sa Bom. To become a Sa Bom, a practitioner must be at least 21 years old and be a 4th dan. They must study for two years completing both written work and tests as well as teaching in their local Dojang and passing a teaching test at a Ko Dan Ja Shim Sa ( Rank testing for practitioners 4th dan and above). A practitioner with a Kyo Sa or Sa Bom certification is able to open their own Dojang and approve rank tests for gup member. See also Moo Duk Kwan Tang Soo Do Notes References External links U.S. Soo Bahk Do Moo Duk Kwan Federation U.K. Soo Bahk Do Moo Duk Kwan Federation Philippine Soo Bahk Do Moo Duk Kwan Federation Korean martial arts