Need more info YES off topic if edited NO
Although the question may be get opinion based answers it is:
1.) Clearly about marital arts or management of.
2.) It is a question that will probably be askes again by another user.
3.) "Best" answer is subjective although the top answer may not be the best anser (happens by the way) doesn't mean it is not good it is clearly a well recived answer.
4.) How as teachers or instructors are we to grow on here if we can not ask questions based on teaching or improving our schools?
5.) When all else fails trust, I think that posting the question to the community is the best way to identify what we as a hope find off topic, I agree with discussions about questions when they have been marked off topic and you disagree with the vote.
In general the question is missing information like how you want to make it exclusive so I think it would/should be flag in one way or another.