Turnoi. Allow me to address both your comments. You are a non NES. I genuinely think that most people who know you either personally, or from discussion boards like this, respect your academic achievements.

That said, I really think you are missing my point totally. I'm not talking about honesty, integrity etc, I am talking about practicality.

I happen to have a degree in Business Administration, (and because of that, I get asked to teach Business English), but in reality, how does a degree in Business Administration qualify me to teach ESL? It doesn't.

What qualifies me to teach ESL is my advanced diploma in TESOL/TESL/TEFL. These are genuine qualifications that I studied hard to get.

Anyone who is teaching ESL with a fake TESOL/TEFL/TESL cert is certainly dishonest and has no integrity.

If they have genuine TESOL qualifications, come from a NES country, why does it matter if their degree is genuine or fake?

The degree itself bears no relevance on their ability to teach ESL. That's my point !