Harrypottermeetsperyjackson Stories

Basically percabeth go to Hogwarts. Percy is the hair of Gryffindor. They have to keep their identities a secret and fight in a new war. Will they suceed or fail? Who knows. The golden trio are back at Hogwarts to repeat their final year when some exchange students from America show up. I'm this story Dumbledore lived but Fred died in the war. I suck at summaries.