One thought: if your daughter wants to say goodbye to friends, then you might need to give the teacher a bit more notice. But I think I'd try to discourage that if I could help it. Better to just have the friends over for playdates and skip the goodbye scene.

Of course, I'm not a big fan of "rampant emotionalism," so if the closure is something that is required in this situation, then you have to give more notice.

Not much more, though...

Kriston