The Broken Toy Soldier
Harry Potter, The-Boy-Who-Lived, is saved from the Dursleys, and grows up with the Four Founders of Hogwarts. He is tought by them until he reaches the age of eleven, when he goes back to his own time and is thrown in to a whole new world.
I got some of this idea (the 'growing up with the Founders' thing) from another fic-for the life of me I can't remember who it's by, and what it's called, so if you know, please tell me-but the rest I came up with. All rights go to JK Rowling.
ALSO: this is a Draco x Harry fic, which is gay, so if you don't like it, don't read it. The relationship won't be coming for a long while yet, though.