Just a word of caution to those who might be thinking of joining some national and international martial arts organizations..There are a number of instructors advertising memberships to unsuspecting instructors and students....some of these organizations advertise that their head instructor to be 10th degree black belts. While this is certainly possible ( not likely ) , they are often self promoted , or promoted by their own instructors. If you think this doesn't happen, I will estimate that at least half of all high ranking instructors 8th degree and above , got their rank this way. How can you know this? Only through careful investigation!