Frequently the foreign students have an instructor with them who will jump in if the situation warrants. The best way for these students to learn is via 'immersion'. I work with a number of guys subjected to this immersion, and though they hated it at the time, now speak better English than me (that's not a big statement, I know). Face it, if it you want the money, jobs etc these students bring, you have to put up with a little inconvenience. And it's not just non-english speakers who battle with the R/T.