Ben McClean wrote:
Has anyone here been in a similar situation and if so how did you deal with. I fear that what he is saying to me in class he may be saying to his mates at school and this would get him in big trouble.
Any advice would be much appreciated.
Even as a yudansha, I have been corrected by people who were certain I was training incorrectly. Of course, I was, but many of them had no idea what I was doing wrong.
I would handle this by swallowing any lingering pride, saying Oneigaishimasu! and enjoy training and learning from him. It is very likely he might learn something from you in the process, even if you don't intend to teach it.