Promotions in TKD beyond a certain point are either:
- A bunch of new things to memorize, which are rearrangements of things you've learned before.
- Mostly a formality based on time-in-grade.
What I mean by this is, if you compare the requirements from my 3rd degree test to what would have been on my 4th degree test, the vast majority of them are just new combinations of old techniques.
For example, at my school, we had rote memorized combinations for testing. One combination in the advanced colored belts was roundhouse kick, spinning hook kick, step-behind side kick. One combination in 1st degree black belt was roundhouse kick, step-behind side kick, spin hook kick. One combination at 2nd degree was roundhouse kick, spin hook kick, roundhouse kick, spin hook kick.
By 3rd degree, out of every 10 new items I had to learn for my test, only 3 of them had something that wasn't covered in previous tested material, and only 1 of those had something that was actually new to me. For example, there are no colored belt combos that use a double roundhouse kick or have a foot switch. One of the black belt combos is double kick, switch, double kick. But we did do double kicks and foot switches as part of the drilling in colored belts. So this was technically new as far as the rote curriculum goes, but wasn't actually a new technique.