ok - as one of your students, it's not politically correct for me to respond. But as a teacher, my answer is simple: teach the test.
You already cover everything in class on the BB test anyway, so this is a moot issue, but for those not familiar with the components of the test, they are:
1. Sanchin
2. Designated kata (Seisan for shodan)
3. Exercises
4. Dan Kumite
5. Seisan Bankai, and
6. Sparring (continuous, not point)
I can't think of anything that my classmates cannot do from the above list. And, because you lead by example, I think that they will have fun during the continuous sparring, especially if takedowns are allowed/encouraged!
Having visited many Uechi-ryu dojos over the past three years, and observing 3 or 4 BB tests, I don't think the people testing from our dojo will have a problem. I know that you are ultra conservative in awarding rank and that you won't send anyone who is not prepared.
And that's not to say the test is easy - I've seen many people fail. The true test of character, however, is to look within after failing and to come back better prepared. That is, a good karate-ka should accept responsibility for not performing up to par and not blame his or her instructor for a sub-par performance during his/her BB test.
Congratulations on reaching this milestone. Now you have to think about scheduling black belt classes!

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D. Steven White
swhite@umassd.edu[This message has been edited by Steve (edited April 24, 2001).]