Twilight has assigned her daughter the same assignment as Twilight had from Princess Celestia, when she was a teenager. Here is a series of the letters describing the friendship lessons Midnight Bloom learns with the rest of the kids.
(based off of true events)
Just a warning: Lots of OCs. I know this may turn away a lot of readers, but if you do read it and you get confused, I have a whole blog post describing OCs.