A fee is charged for the testing, which covers facility costs, instructor's time, a new belt, a certificate of promotion, etc. The fee is usually waived for the next testing if you are not advanced.
Requirements for Belt Tests
To be eligible participate in a testing, students must have a minimum time in present rank, a minimum number of class training hours, minimum age, and instructors recommendation. To be promoted, students must adequately demonstrate some or all of the following: a combination of specific techniques, a specific pattern, a set of step-sparring techniques, a board breaking routine, and free-sparring skills. Promotion requirements vary depending on the school, the belt level, and the organization to which the school is affiliated.
What is Being Tested?
During a test, black belt judges look at the way students perform some of the basic and more advanced techniques of Taekwondo as well as the required test material. Judges rate each student's performance on the basis of correctness, power, timing, control, and enthusiasm.