What's the correct order:
Lessons are not currently being offered.
Lessons are currently not being offered.
The two sentences are equally correct, and mean the same thing, but the emphasis is slightly different: ... are currently not... emphasizes "currently", while ...are not currently... emphasizes "not".
If you're including the word "currently" because the lack of lessons is a temporary situation, you could write "Lessons are currently not being offered." If, on the other hand, you're including the word "currently" just to soften the blow, then you might write "Lessons are not currently being offered."
Note that the difference in emphasis is pretty subtle, and many people will completely miss it. So if one of the sentences flows better for you, it might be the better choice, regardless of its emphasis.
I don't see any difference between the two. The meanings of those two sentences are clear and identical.
As RegDwight shows, the former construction is more common, so if you have to choose, I'd go with that one.
Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Would you like to answer one of these unanswered questions instead?