Hi from a newbie! My son has just attained his Shodan rank at the age of 13 after 6 years or training. He studies Shotokan Karate. He has been with his present club for 2 1/2 years and his instructors are very well thought of in the community. Last night, another senior grade (but not an instructor at the club) took the class as the normal instructor was away. It was my son's first night as a black-belt and he was really looking forward to it. The issue is that the instructor continually picked on my son all night. He asked him to perform a kata in front of the class, which was great, however, when he finished (he did it really well by the way) he told him that he had been stepping incorrectly throughout the entire routine and performing it all wrong! He had only graded with this kata (under an 8th Dan Jananese Sensie) two days before. He then went on to tell him he was not doing it correctly and he was being 'dangerous'. He also completely lost his cool with some very junior members of the club, shouting at them and telling them they were not paying attention! This never happens with the regular instructor. The kids looked completely deflated. I was an inch away from telling my son to 'bow-out' and simply taking him home. I know the guy is wrong, but the question is what was his motivation to act that way? Is he hungry for 'power' or is there something else to it? He has taken the class a couple of times before and I have noticed his 'lack of composure and patience'. Do I mention it to the actual sensie in order that he does not let him train the class again, or do I just keep my mouth shut? My son also suffers with auditory processing disorder, which makes it difficult for him to hear with any background noise. The instructor has a foreign accent and is (at times) quite hard to understand. Just as a bit of background, most of the other adult students also had a look of disappointment on their faces when he stepped up to instruct. Just don't know what to do for the best. I was the only parent there and so I couldn't really discuss it. Am I making a fuss over nothing? It completely ruined his evening and did nothing to teach the lower grades any respect.