When I was in karate at my old school we had like 12 color belts. I believe they have added a few since then. They also created a secondary system with stars for black belts. There was a reason for this many belts/stars. It was to make money, not martial artists. We have 8 total belts (including black) and no testing fees.
I'm not reinventing the wheel, just changing how someone gets from point a to b. The techniques are the same. Standards may be slightly different. I feel its a fair approach. Again how long someone takes to get from white to black is largely dependent on committment. If someone went to every class and put in a little extra effort it may take 4 years. Someone else could be more casual and take 7.
Here's what I mean. In my situation, I'm a 4th degree black belt. I got my 1st degree black belt in a little under 2 years (although 6 total years if you factor in my previous training when I was a kid), 2nd degree a year later, and 3rd degree two years after that. 4th degree took a lot longer (for reasons I've covered extensively in other threads, but will mention a bit in response to your next quote).
If I were to make it so that 2 years in you could test from yellow to purple, 3 years in you could test to orange, 5 years in you could test from green to blue, and 8 years in you could test from brown to black...I feel like I'm pulling the rungs up from under me and making it harder for people to make the same achievement.
To someone who knows the martial art, "I'm a purple belt in BJJ" really means something. But to most lay people, "I'm a purple belt in BJJ" means "I do BJJ, but I'm not a black belt."
I know these are minor things, and belts shouldn't be the be-all end-all. But it's something I really feel is that I shouldn't artificially hold people back.
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Then there's the other side of it. If folks come to my school with previous training, how do I fit them into my system? Someone comes in with a red belt they got in 1.5 years, do I have them keep that red belt, even though it would be a 6-year belt in my system? What do I do with someone who comes in with a black belt, when black belt is the Mastery level in this model?
I'm not a big fan of resetting people at white belt. This is based on my experience in BJJ where your belt color follows you from gym to gym, and my experience going to a Hapkido school where the guy's attitude was, "I don't care what belts you've gotten in other schools, I've never given you a belt, so you're a white belt here." (Meanwhile I'm a black belt in Hapkido).
Having the initial black belt be a more forgiving rank and then going up to 4th degree gives me the leeway for folks to come in with rank and represent that rank well.
Also when I mention MA politics... A lot of schools hold students in limbo for years by dangling belts infront of them. Brown belt limbo is definitely a thing and it happens at black belt as well. By withholding a belt, instructors string along people for indefinite timeframes. There are a lot of opportunities for manipulation and its unfortunate.
I feel this is something that definitely happened in my case, it's part of why I didn't get my 4th degree until very recently, why it wasn't registered with the organization, and ultimately why it fell apart.
I was thinking about this again recently. To sum up my relationship with my previous Master: he was a great teacher, a poor manager, and a terrible mentor. He could teach the skills and was very polished in his teaching up through the 1st degree black belt curriculum, but past 2nd degree he didn't always remember the curriculum very well, and he wasn't very good at setting expectations with his staff. He also tended to get jealous whenever someone would come to me for advice instead of him (because he's the Master).
Also, something I didn't really think of until recently, is that in the other school I visited since moving away from him, the owner referred to his wife as "Master", where in my main school, the owner referred to his wife as "Mrs.". I think my previous Master did not want to call someone else "Master", because then he would be "a master" and not "The Master" of the school.
There's another student at the school who is 4th degree in a different organization, 3rd degree in our organization. He is referred to as "Mr." despite also being referred to as a 4th degree. When formally introduced, he is introduced as "4th degree black belt", not "4th degree Master black belt."
So I wonder if part of the reason he wasn't very inclined to promote me to 4th degree is that he didn't want to share the Master title.