I've just come from a club that in my (and most students) had a poor instructor. Instructor has over 40+ years karate (although I think first dan may have been in a different style, not shotokan). Anyway, out of my last 90 minute session with him I estimate we trained for 20, the rest was standing there listening to him bad mouth other clubs, instructors and about his you tube watching. Myself and 3 dan's didnt agree on his overriding of grading results (we were independent so we graded students), when we voiced our concern we were told, "if you dont like it leave"... so we did. Myself, 2 other Dan's and a 4th Kyu, we decided to set up our own club and within 2 weeks a lot of the other students from the old club asked if they could join us as they too were tired of his poor teaching, personal attacks (telling an adult he's fat in front of the whole class and thats why he cant kick), pulling a female student with degrading hip issues to the front to demonstrate a kick that she is unable to do, and knowing she couldnt and forced her into tears in front of the class. 2 months on and his class is almost none existent and yet we have not approached any student, they approached us, left a while ago or was going to leave. He is now bad mouthing us on social media etc, which we're not rising to, but he hasnt got the guts to ask why his class all left, it was because of him and his teaching. Since we left parents have looked at his personal facebook page and are shocked at his racist posts etc. I and my fellow students want to learn and enjoy karate, and thats what we can now do, no more hating lessons and being made to feel tiny when we couldnt make a lesson. I'm sure there are other clubs our there who feel the same, and my advice is , do it, we feel liberated.