get yourself some kind of TEFL and you should be sorted if you want to teach english,
but with the german qualification you'd be able to teach it no hassle, all the classes are done in the target language so even though you're studyin polish you wouldnt even have to use it at all.
From another topic:Proficiency in English (CPC), how far it would get in Poland?
My Polish friend speaks perfect polish and english. She has got Cambridge Proficiency Certificate passed with A. How far would it get her in Poland? Is it some sort of equivalent of a polish something?She has no university degree.
With just the English knowledge (even perfect) she could be a teacher or translator at most... (but then she would need a college degree to teach). Maybe she could be hired as a private interpreter or something.