Yes, I know this is long. But its an awesome fanfic of the Sherlock characters as professors at Hogwarts!<-----omgomgomg I thought he was on the Hogwarts train before I even clicked on it! I LOVE this.
Here's a charming bit of writing about that, again by dear-tumb1r:
When Sherlock and Harry potter collide the fandoms die.<the Doctor needs to be added,to help them with the timey wimey thingy that goes DING when there's stuff!and Dean,and all them hunt down Voldermort with Harry!I AM THE FUTURE!
The Great War: A Harry Potter and Percy Jackson Crossover