Teaching practical language skills is usually much more than just teaching Oral English to adults or kids. You will probably know about the basic four practical language skills (listening, speaking, reading, writing) and their related respective sub-skills. For incompetent owners of crappy training centres to believe that teaching Oral English and employing native Oral English teachers for that purpose would just be enough is a fundamental error, and it shows that they know nothing about the product they are "offering". It's the same as if someone would make the unfounded claim of being a specialist for crocodiles giving all kinds of funny reasons why crocs should be fed vegetables...LOL

Old sods like me and the sewage worker can soon pick up them related sub-skills in a few lessons.

Well, i known Alligators, like to woof down fruit&veg and i suspect crocs are partial to a turnip or two. am I right or am I right?