1. In our organization, testings are generally held every two months. There is the main Central Studio exam, as well as regional tests held at different schools around the Organization.
2. Not every student tests every two months, just the ones who are ready.
3. It usually takes about 2-3 years to attain black belt.
4. Judging is done by Instructors who have attained 4th Dan and above in the organization. Below 4th Dan, you can teach but not judge.
5. Instructors cannot judge their own students, only make notes. Their scores for their own students are not counted. It is very easy for an Instructor to be biased in favor of their own students, much like a parent who believes their child can do no wrong. Therefore, an Instructor other than the student's is less likely to be partial. Once in a while, we will have guest Grandmasters if it is a really big test.
6. Black belt testing is important, because it gives the testers a reason to feel proud of their accomplishment. Not only the students, but their Instructor, fellow students, and family need a sense of ceremony that acknowleges what they accomplished. Much like high school graduation. What high school says "Here's your diploma, now get out!"? They make a big ceremony out of it. Same with black belt. It is special and should be treated as such.
7. Every organization is different, but 10 years to black belt is a bit unreasonable. How do I know what I'll be doing in 10 years. I get the impression that a lot of these organizations are led by Instructors who purposely keep their students from getting to black to avoid having to really teach them. In other words, if I didn't get that high in my original style, or if I made it up (Dragon Kempo??)
, the longer I make you wait til black belt the longer I can go without having to admit I have nothing new to teach or start making things up.