The book was also very popular in Harry Potter's second year at Hogwarts, when every copy was checked out of the library due to the reopening of the Chamber of Secrets. However, Hermione shows slight frustration with the book when scathingly renaming the book in her fourth year because it does not mention the use of house-elves at Hogwarts, even going so far as to suggest a couple of alternative titles for it: A Revised History of Hogwarts and A Highly Biased and Selective History of Hogwarts Which Glosses Over the Nastier Aspects of the School.
In 1997, Hermione considered this book as she was sorting supplies for their mission to find Horcruxes. It was one of the books she decided to bring with them, stating that she "wouldn't feel right" if she didn't have it.
The book's original hand-written manuscript is stored in one of the Hogwarts Library's annexes, and can be only read by special appointment. However, students and staff may admire its ornate cover from a distance.[1]
Hogwarts is hidden to Muggles. If a Muggle looks at it, they see an old ruin with a sign saying: "DANGER, DO NOT ENTER, UNSAFE".
In 1792, when a cockatrice went loose during one of the Triwizard Tournament tasks, the heads of the three schools, including one from Hogwarts, were injured by the deadly creature.
Muggle technology cannot be used within the grounds of Hogwarts.
Boys are not allowed in the girls' dormitories; if they try to enter the stairs turn into a slide.[3]
It is unlikely that the Room of Requirement is mentioned, otherwise Hermione Granger and not Dobby would have suggested using this room for use by Dumbledore's Army.
J. K. Rowling was asked in an interview if Harry and Ron would ever read the book. She replied: "Never. It’s a gift to me, because all my exposition can be dressed up as, 'When are you going to read it?' So Hermione fills in the reader as well, so I could never let them read it."[4]
Added by Colin Fletcher
Added by Seth Cooper
