When is it approporiate to start teaching?
I think maybe this subject has been up before but still:
When it is appropriate to start teaching beginners?
I know that some schools officially set the "teacher" level to nidan but would it be wrong to substitute your sensei when just uhm... let's say 3rd kyu? Or taking a beginner group yourself on that level? 1st kyu? For how many years should one train OR what knowledge and attitude should one have to be morally allowed to teach those who know less?