Being abroad, a group of us have got together to explore the option of hiring an English language teacher to help the dcs - aged 4 - 8 - keep up to speed with reading and writing in their mother tongue, as they are all being educated in other languages.
We are from the UK, and at the moment have the option to get some shared "tutoring" by either an English Primary School teacher, or an American kindergarten teacher. Dd has done a trial lesson with the latter and really enjoyed it, though I think she is a little bit ahead of the rest of the group (mainly through being older).
DH pointed out though, that being taught English by an American might lead to different spellings and different sentence construction. If I have a choice, how much do you think it would matter?