Ranks belts and promotion

Taekwondo ranks are typically separated into junior and senior, or student and instructor, sections. The junior section typically consists of ten ranks indicated by the Korean word geup.(also Romanized as gup or kup). The junior ranks are usually identified by belts of various colors, depending on the school, so these ranks are sometimes called color belts. Geup rank may be indicated by stripes on belts rather than by colored belts. Students begin at tenth geup (often indicated by a white belt) and advance toward first geup (often indicated by a red belt with a white or black stripe).
The senior section is typically made up of nine ranks. Each rank is called a dan,also referred to as black belt or degree (as in third dan or third degree black belt). Black belts begin at first degree and advance to second, third, and so on. The degree is often indicated on the belt itself with stripes, Roman numerals, or other methods, but sometimes black belts are plain and unadorned regardless of rank.