(I kept alive: Fred, Snape, and Dumbledore) The seven, Nico, the Stolls, and Thalia, and Clarisse are sent to Hogwarts after the major wars. The wizards know what they are, and both sides are seeing how wizards and demigods interact, so they can possibly be allies. Someone is causing trouble trying to keep then apart...
Nico, Percy, and Thalia are given a quest that only children of the Big Three can complete... together. They must go, to Hogwarts. (takes place in The Dark Prophecy) I got bored of all of the other nonaccurate Demigods go to Hogwarts and the only good one I found was updated 2 years ago so I figured I'd write my own