Norway, England and Romania have been sent to Hogwarts to learn to control their magic. How will the story be re-written? When Voldemort gets wind of three boys who can use old, dark, rare magic? But more importantly how will their first year be?

Percy Jackson goes to Hogwarts to teach. (slow updates because of life)

Once Arthur Kirkland got his acceptance letter into Hogwarts he was ecstatic. He thought it was the chance to prove himself to his family. Arthur learns of his talent for magic and communication of the nonhuman kind. He runs into the young wizard Alfred F. Jones, who manages to turn his life upside down in the most unpleasant of ways. ((Future UsUk along with other pairings))

Unwillingly brought into a strange world, trying to hide your secrets, being there during a tournament that hasn't been held in over a century, and oh, having the most powerful wizard seeking you for your power. Simple? Certainly not.