A Study in Witchcraft

Hogwarts, a school for magical beings, welcomes Sherlock Holmes and John Watson as first years. But, with the Wizarding War on a hiatus, who will try to bring back evil within the school? An AU where the teachers are mainly the same, but the students are not. Possible hints at Johnlock in later chapters, but nothing huge (they're 11, so obviously no smut). Will include S3 topics.