A few uses of 'bloody hell' by Ron Weasley. Occasional mild insults like 'idiot,' 'fool,' and 'nitwit.' Uncle Vernon calls Harry a 'freak' repeatedly.
A troll attacks students in a bathroom (intense for young children). Harry is nearly thrown from a bewitched broomstick at great height. Voldemort's face is revealed on the back of Professor Quirrell's head (disturbing imagery). Quirrell's body disintegrates when touched by Harry. A unicorn is shown dead with silver blood. Fluffy the three-headed dog snarls and lunges. Harry is choked by Quirrell/Voldemort. Chess pieces violently destroy each other in life-size wizard chess, and Ron is knocked unconscious.
The entire premise centers on witchcraft and wizardry. Children attend a school to learn spells, potion-making, wand use, and magical incantations. Characters cast spells throughout ('Wingardium Leviosa,' 'Petrificus Totalus,' etc.). Divination and fortune-telling references. A magical sorting hat reads minds. Ghosts inhabit the school and are presented as friendly. A philosopher's stone grants immortality. Unicorn blood sustains a cursed life. A dark wizard (Voldemort) practices evil magic and possesses another person's body. Centaurs read the stars for prophecy.
Adults drink at the Leaky Cauldron pub. Hagrid drinks ale. A magic potion must be identified and consumed to pass through enchanted fire. Various potions are brewed in class.
A few uses of 'Oh my God' or 'My God' as exclamations, though infrequent.
Strong themes of friendship, loyalty, bravery, and self-sacrifice. Harry risks his life for his friends. Dumbledore teaches that love is a powerful protective force. The story values courage, standing up against evil, and choosing right over wrong. Neville is rewarded for standing up to his friends when he believed they were doing wrong.
Harry Potter has lived under the stairs at his aunt and uncle's house his whole life. But on his 11th birthday, he learns he's a powerful wizard—with a place waiting for him at the Hogwarts School of Witchcraft and Wizardry. As he learns to harness his newfound powers with the help of the school's kindly headmaster, Harry uncovers the truth about his parents' deaths—and about the villain who's to blame.