Advice On Part-time Work And Permit/license Advice

Hi all,

I wonder if you can give some advice on how you go about obtaining a work permit when a teacher, but not employed directly by a government school?

As a hypothetical-If you have a non-im multi B visa and work for a language school who places you in a number of different schools or training scenarios with varied weekly hours, is it still possible to easily obtain a work permit and teachers license (someone please explain that one) as long as you don't mind the fee which I believe is ridiculously expensive but there you are?

I am aware a huge amount of teachers work without one and it does seem an area where the authorities in general appear to have some empathy but knowing Thailand the thought of looking over ones shoulder with the possibility of being deported for this just does not appeal personally.

Any advice in this area would be appreciated.

Mak