1. What does Harry Potter use to read under the covers at the start of the book?
a flashlight

2. In the film, who is in the train compartment with Harry, Ron, and Hermione when the dementors come?
Professor Lupin

3. Who is named Head Boy at the start of the book?
Percy

4. What happens just before Dumbledore gives his welcoming speech in the film?
A chorus sings a song starting "Double, double, toil and trouble"

5. How many hippogriffs does Hagrid bring to his first class in the book?
A dozen

6. How does Harry get his new broomstick in the film?
Sirius sends it to him after he escapes on Buckbeak

7. In the book, what happens when Harry attacks Draco Malfoy and his friends while wearing his Invisibility Cloak?
Crabbe trips over the cloak, and Harry's head is seen floating in midair

8. In the film, who throws a rock through the window of Hagrid's cottage, hitting Harry on the back of the head?
Hermione Granger

9. In the book, who sees Peter Pettigrew on the Marauder's Map?
Professor Lupin

10. Towards the end of the film, who reassures Harry that his actions have made a difference?
Professor Lupin