Ron, "There is the veiw point that the instructor shouldn't put the student up unless they know they will pass...but somehow that (to me) lets the student off the hook a bit."
I'd prefer to put it as,"we don't put people in for a grading until we know they should pass", failing is always an option as people can perform badly on the day.
Paul, I can only offer my sincere admiration to a man who has never felt more pressured in grading than when just practicing. I can only assume either your dojo is normally pyschologically brutal
or you have untapped skills we should all learn...
Yes, coaching plays a part, but a grading should never be something you can take for granted or feel as though you're going through the motions on.