This is in part adapted from our syllabus to explain our own grading system, along with generally available information to provide contrast with the more traditional method.
The belt system in the martial arts was originally developed by Jigoro Kano, founder of Judo, and initially consisted of 2 belts - white for students and black for instructors. A third belt was later added for high level students (some version of this is often seen in aikido, where ikkyu (1st kyu) students will have brown belts, with other kyu grades having white belts and instructors black), and later a purple belt as a chilren's rank.
This is the system which eventually became - with the addition of a blue belt - the BJJ belt system, as well as the 7 belts of Judo (white for novice and then 6 kyu grades).
It was further expanded by Funakoshi Gichin and his contemporaries to include the 10 kyu grades currently used in the majority of karate schools nowadays, with each kyu grade using a different coloured belt. This is typically the most recognisable system, and whilst variations in the exact colour order do exist, usually there is some variation on the theme of red/orange/yellow representing the lower grades, green/blue/purple representing mid grades, and brown belts - often with additional stripes added - representing higher grades.
At Aylesbury Modern Combat Karate we use a much more streamlined system - more similar to that found in BJJ, or to that which would have been used by early contemporaries of Kano to delineate student skill.
We have 4 belts in the system (not including white), spread across 8 kyu grades plus dan grades, with each belt corresponding approximately to an area of combative skill. The first belt is yellow - achieving this indicates the student has developed an acceptable level of skill in striking, limb clearance, and more distance techniques. This is followed by green, at which point the student will have developed a baseline understanding of grappling, including simple takedowns, hip throws, and so on. Next up is brown, and at this point the student will have completed the course of the Heian/Pinan kata and should be able to display a respectable level of proficiency both on their feet and whilst on the ground. Each belt has an intermediate grade where a bar of the next ranks colour is added to the belt to demonstrate certain way points in training being acheived.
The next belt is the most contentious - the coveted black belt. Much more a symbol in the west than in the east (where it's possible to gain a black belt in a year - obviously a sign of a McDojo until one realises the student being awarded the belt has likely trained 2 hours a day, 6 days a week for that year), the black belt is often held up as "The beginning of your real training!"
This is, of course, nonsense.
Our syllabus requires at a minimum
5 years of training before earning a black belt. If, following 5 years of training with me you are still an absolute beginner, please take all of your money back - I've failed you.
To paraphase our syllabus: "A black belt karateka should be an expert striker, able to strike vital targets both standing, and on the ground."
I want our black belts to be able to stand up with anyone who's been training for a similar amount of time and be able to if not win, then at least make a decent showing of themselves, and treating them as beginners makes this impossible for them.
This is also where the relationship becomes far more reciprocal. To again quote our syllabus, "Black belts should be competent enough to define their own training goals, and work with the senior instructor to work towards these." Black belts should work cooperatively together to better each other and push each other forward, and not stick too rigidly to an "I got my belt before you so I'm in charge" mentality.
It's a great honour to have had our syllabus reviewed by Iain Abernethy, 7th Dan, of the British Combat Karate Association, and to have had it pass first time. A lot of time, effort, and love has gone into crafting something which provides a well rounded, realistic, and informative teaching progression, and it shows in the final product.
We'd love to share our training with you, so please do come along to a session or two.
Stand firm. Be strong. Let all that you do be done with love.
Rob.