@McTag,
If you knew the amount of minutiae in grammar that most ESL folks get in their home country, you probably wouldn't be as concerned. At least here they're getting the straight goods, not the silly nonsense that most have gotten from the old school.
Just one example. Ori asked a question about matching 'would' with another past tense lexical verb. He thought that it was necessary because of, one, some misguided notion about sequence of tenses/tense matching, two, he believed and may still do so, that modal verbs have tense.
How can he be expected to master one of the most difficult areas of English, the modal verbs, with that sort of silliness?