Like most martial arts, Taekwondo uses colored belts to denote the students progress through his journey. There are two main categories of rank in Korean Martial Arts, Colored Belts (junior class) and Black Belts (senior class). Each category has nine levels with the colored belts using Grades 9th through 1st, and the Black Belt using Degrees 1st through 9th!
Belt Colors also have meaning as described below (with the corresponding Grade numbers)
White – Innocence or without experience (9th Grade)
Yellow – The earth as a seed is taking root (8th & 7th)
Green – Growth and knowledge as the seed begins to grow (6th & 5th)
Blue – The sky towards which the plant grows tall and strong (4th & 3rd)
Red – A warning for the student to use control as his strength grows (2nd & 1st)
Black – The opposite of white, when a student is truly ready to learn (1st – 9th)