@roger,
Of course it is, Roger. Just the same as getting oneself up to speed on grammar issues or language usage, IF one wants to answer questions that are pertinent to ESL/EFLs.
When a person sees sb/sth/st in Collins, Cambridge, Longman, ..., it's completely natural to assume that most people are familiar with those, pretty minor really, abbreviations.
Instead of trying to change a natural behavior from students, it seems to make more sense to correct an unnatural one present in their teachers.