I think you mean 8th Kyu, as I understand it 10th Kyu doesn't really exist (neither does 10th Kyo for that matter), as that would be a white belt rank before any gradings. I say 8th, because, seeing as we train together, and we're the same rank, I should certainly hope I'm not 10th Kyu
Also you may want to double check how you spell Chris's name, considering you're learning from him
Not to derail the thread into ranking structure, but for the record it is as follows (DuskB4Dawn, Sanke, Supra are all students with me):
10th Kyu/Mu Kyu - no grade, beginner. White belt.
9th Kyu - first "official" grade. White belt, one white star above badge.
8th Kyu - Green belt.
7th Kyu - Green belt, two white stars.
6th Kyu - Green belt, three white stars.
5th Kyu - Green belt, four white stars.
4th Kyu - Brown belt, one yellow star.
3rd Kyu - Brown belt, two yellow stars.
2nd Kyu - Brown belt, three yellow stars.
1st Kyu - Brown belt, four yellow stars.
Shodan-ho - Probationary black belt, officially part of the ranking but not often used. Black belt, no stars.
Shodan - Black belt, one silver star.
Nidan - Black belt, two silver stars.
Sandan - Black belt, three silver stars.
Yondan - Black belt, four silver stars.
Godan - Black belt, one gold star.
Instructors have embroidered gi.
That is the entire ranking list for us, we only go to Godan (Fifth Dan). The basis is the Bujinkan system (obviously), although we differ by having the latter Kyu grades represented by a brown belt, rather than green all the way through to Shodan. Everyone clear now?
I have people wear a white belt (or no belt) for the first few months, until they can roll with some skill. Then they get a green belt. I don't do real 'ranks' until shodan.
My ranking system:
white belt: I'm made of glass
green belt: my safety is your responsibility
shodan: my safety is my responsibility
As I see it, it's the only meaningful use for rank like that. If someone goes to a seminar or another dojo with these belts, I think this is the way most people are treated. So, I think it's useful to rank this way as it makes sure people remain (relatively) safe.
The ranks over shodan are where the skill in movement come in. I can't tell you what the difference between the dan ranks is in words, but I can see it (as I grade in my dojo).