Question: what are taekwondo teachers called?
Answer: In the International Taekwon-Do Federation, instructors holding 1st to 3rd dan are called Boosabum (assistant instructor), those holding 4th to 6th dan are called Sabum (instructor), those holding 7th to 8th dan are called Sahyun (master), and those holding 9th dan are called Saseong (grandmaster).