Princess World: Princess Academy Adventures
Magical princesses have school life adventures in a world of wild magic.
Princess World is full of magic. You can't escape the stuff. Uncoincidentally it's also full of princesses, individuals who through legacy, effort or accident are able to control magic. Being a princess is a bit like being a magical girl, except you're transformed all the time and there are hundreds of other princesses around. Enough other princesses, in fact, to make some kind of formalised education absolutely necessary.
Thus, Princess Academy.
Princess Academy Adventures is a tabletop roleplaying game about demigod-avatar magical princesses attending school and having adventures in a chaotic world. It's powered by the apocalypse, dad-tested and daughter-approved. I originally made it to play with my daughters and we've had a lot of fun with it over the years. I figure other people will enjoy it too.
Right now the core rules are available, along with a sourcebook detailing some of the factions of the known kingdoms, a couple dozen monsters, and a few other things. There's also a character sheet, and in a soonish sort of timeframe I'll put up some of the adventure modules I've made too.