would you as A Martial arts or self defense instructor?

I think Hamid missed the point of your question. No I would not ever certify somone to teach even basic self defense after a sparring session. Even though a lot of people on here want to think it, sparring is not the same as self defense. Sparring has it's place, but can't prepare you for a opponent that is out to hurt you.

I would require someone to train with me for a while so that I could not only gage his level of proficiancy, but also his charicter. If my name is going to be on his letter of merrit, I would need to know him a lot better.

@Garret, thanks for mentioning our art, but we are not Krav Maga with traditional martial arts roots. We are a traditional martial art, with titles, uniforms, salutations, belts, forms, and respect and discipline is taught. We are just the "Hawaiian street fighting art" and we just have crazy training methods. And because of those crazy training methods, not too many people stay in Kajukenbo and that's why nobody's ever heard of Kajukenbo. And when Kajukenbo people compete, they follow the rules of the competition. Benny Urquidez follows the rules of kickboxing, and Chuck Lidell follows the rules of the UFC. Or else they would be disqualified. What was shown on Fight Quest was just a few Kajukenbo schools getting together and having a bit of fun. The basic rule is don't deliberately do anything to hurt your sparring partner because you want him to come back to train next week. But sometimes things get a bit out of hand. But it's never intentional. Kajukenbo is good for self-defense. But the training is vigorous, brutal, violent and painful. And most people cannot handle it. It takes immense dedication to go back week after week. If there's a hardcore Kajukenbo school in your area, check it out. If not, check out the Karate, Kung Fu and Tae Kwon Do schools. Best of luck in finding the martial art that suits you.

yes,i am a Martial arts & self defence instructer.

self defence is neccesary for martial artist after a sparring

NO if that instructor is confusing dojo sparring with the reality of self defense he's a moron.

Not if you want to maintain your credibility within the arts. Thats like seeing a elementary school kid hit a home run then trying to sign him a contract with the major leagues.

No, that would imply that the training he gives came from you. It would be like telling someone you verify and condone whatever he teaches. The legal implications would be horrendous if someone got injured.

I wouldn't even consider it.

sounds all legalistic and stuffy to me. he someone can teach let them teach. if they can't, don't.