
Originally Posted by
Mistletoe
This had been very helpful everyone, thanks so much!
I do agree, really with bits of everyone's opinions. I have a feeling that it would at least be taught in the seventh year. And obviously members of the Order of the Pheonix use it to communicate, so they all know how to do it.
Harry teaches the DA to do them in OotP, doesn't he? And every person in the club gets it eventually, even if it takes Neville a bit longer. So obviously, it can't be as advanced of magic as Lupin led on if a room full of fifth years can get the hang of it.