We're In The Wrong Place (ROTBTFD, SGE crossover AU)

Astrid Hofferson is the weirdo in Gavaldon. The girl with no parents or family, living in the middle of a graveyard. She's the girl who wears all black, and has a bird who'll attack people on sight if Astrid so pleases. When the four year count is up, and the school master is coming to kidnap two new students, everyone thinks Astrid is done for in the school for Evil.
Rapunzel Corona is the golden girl, pretty and popular, well known throughout Gavaldon. She is thrilled by the fact that everyone thinks she is going to the School for good this year. A prince is all she wanted, a dream come true. She's doing as many good deeds as she can until the night feared by everyone around. The biggest good deed? Befriending the weird girl in the graveyard, the deed that will prove that she's better than everyone else.
The two are kidnapped and whisked away to the school for Good and Evil, but not everything is as it seems. Friendships break, bonds are formed, and loves are stolen. Will they come out of this challenging experience alive? Or will they die along the way?

A/N: So I had a really weird idea bout a SGE, ROTBFTD (Rise of the Brave Frozen Tangled Dragons) crossover, plus some Throne of Glass characters. I don't know whether to ship Merricup or Hiccstrid, but I've made my choice for this story. I have stories with both. No hard feelings.
All characters and rights belong to Disney, Dreamworks, Sarah J Maas and Soman Chainani, no copyright intended. Parts of the plot are similar to the SGE books, but lots of it is my own.
I'm gonna try to update every Thursday and Sunday, but some weeks it'll be a different day or the update won't come because I'm busy. And the characters in evil, well some are good in their stories, they're just in evil for the benefit of the story.
Also, I'll also involve throne of glass characters.