Okay, I have this idea about FE in a high school/college setting.( Long list of ramblings and details )
I hope the ages make sense...I tweaked em a bit for my own purposes, but that's not gonna affect their personalities. Nils is a case of "EXTREMELY mature for his age"-he may be a kid, but he acts very much like an adult. Not in the "I swear and stay up late and ride my bike in the street cause I'm trying to be a grownup!" way, either. He's just extremely smart and practical and thoughtful and introverted.
And Wallace as a teacher should be a hell of a lot of fun. XD "You, over there making eyes at that pretty young thing! Tell me what date the Civil War ended!" "Eep!" "Don't give me that! Next time I catch you not paying any attention I'll make you stand up and read the chapter out loud-IN GERMAN!" "I'll be good!"