Gichin Funakoshi in "Karate-Do - My Way of Life" writes in chapter "Shoto-kan" (page 84 in my book):
One of my first tasks, with the completion of the new dojo, was to make up a set of rules to be followed as well as a teaching schedule. I also formalized the requirements for the grades and classes (dan and kyu).
I would like to know what requirements for the grades and classes Funakoshi came up with.
There's a lot of knowledgeable and well-read people on this forum, so I thought maybe one of you might have any information on this or can point me to a resource that might help me further investigate this question.
Thank you, take care