The Big Four (And Friends) In Hogwarts

Hiccup, Jack, Merida and Rapunzel are teenagers with an interesting education, learning their magic from textbooks rather than teachers, with no classmates, and not much company. When they are sent their letter to attend the real Hogwarts School for Witchcraft and Wizardry, everything changes. Will they bond? Or will four separate stories stay separate stories?

NOTE: I only own side characters, not Hogwarts or RotBTD. Also, this is my first story, so no hate okay.