And that exposes my lack of understanding due to the fact that I am in a single language environment, so take a sledgehammer approach to the issue... Oh, I have been in a number of schools that have high numbers of immigrants, one school had over 100 different nationalities each with their languages but the basic rule was, learn English. Interestingly enough, one woman, in her mid 40s from Southern Libya, was not even functionally literate, not even in her own language, but could converse in seven different languages including Egyptian, French, Arabic, Tamazight and her native dialect, as well as English, even at low level and improving. I would give technical instruction and one of the Palestinian kids would translate it for me, Moodle is used there, very successfully, but I only ever saw it in English.
But this is good for all of us to know, Visvanath, thanks for the tip!