You have to get the equivalent of QTS ie full teacher status in Poland or do science o level to teach beyond KS1 But I'm not sure about England and Wales. There would be few schools that would employ someone to teach only KS1.
I've got the full teacher status here, so that's not a problem - but rather that in Poland, "elementary education" (what we know as primary education) only covers the first 3 years - they split into separate subjects after that. So it's pretty unlikely that they'll accept it as being good enough for KS2, unfortunately :(
Already got the science standard grade (as we call them in Scotland at the right level, so that's not a problem :)
Do you think there's really much demand for KS1 teachers who can't legally go further and who don't want to work in a nursery?
A long shot but perhaps try the OU if you have a partner school in Poland.
Could be the way - I really need to get QTS awarded first, then see what they recommend for getting the KS2 rights too.
English as an additional language positions are very difficult to get
Indeed, and it's pretty soul destroying. I don't mind doing it as a 'needs must', but the thought of doing it as a full time job fills me with horror. Even my job in Poland is merely teaching 'in' English, not teaching EAL as such.