I just shared a couple of exam schedules with my students, I'm in China and they're Chinese 18 year olds, and I've no idea if they are using Evernote or not.
I've shared the schedules thus:
1) opened the note, clicked "Share"
2) Evernote wouldn't accept a delimited batch of email addresses, so I dutifully copied and pasted 56 emails over two notes one by one, by hand.
3) Typed a little message "here is your exam schedule" or some such whimsy.
4) Hit the share button.
On one note, a class with 25 students, there is a little message at the top that says "Shared with 11 people in 1 chat", which is a bit confusing because I'm sure that I shared that with 25 students, not 11. If I open the chat, it shows three email addresses, and then "+19', which by my maths, makes 23 students, not 25. I'm very certain that I carefully copied them across from the roster and there are no mistakes.
On another note, a class with 31 students, the note shows that the note isn't shared with anyone. Indeed, if I open the note permissions, it does quite wrongly tell me that the note is shared with no one, despite me sharing it with 31 students, again carefully copying across the email addresses from the roster one by one.
If I open up my work chat, I can see that again with this note that Evernote says hasn't been shared with anyone, there is a chat window that says it's shared with 23 students - the email addresses at the top of the chat window show four email addresses and "+19".
All of this happened at 5pm this afternoon here in China, an now it's coming up to 10:25pm, and I'm yet to have a helpful reply from anyone at Evernote. I posted previously in this very forum, and gave up waiting for whoever is the moderator here to approve my post after 2 and a half hours.