Percy Jackson/Harry Potter Crossover

This is my first fanfic and it's about 12 demigods going to Hogwarts.Please take it easy on me and I promise that it is interesting (after a few chapters), I'm just really bad at writing descriptions. I won't explain much about the characters so I hope you know who they are. The story is set in the September-July after the Gaia (is that spelt right?) War and the Battle of Hogwarts. Leo came back with Calypso and it is a substitute story for the Trials of Apollo series by Rick Riordan. It will contain explicit language and ships!!!