2. What do Petra and Calder learn in Chapter Eleven?
(a) "The Lady Writing" was sent to the Guggenheim instead of Chicago.
(b) Vermeer was never revered as an artist when he was alive.
(c) "The Lady Writing" was stolen.
(d) There are four of Vermeer's paintings at the Art Institute of Chicago.

3. Why was University School started?
(a) To enable unique students to get a quality education.
(b) As an experiment.
(c) To see if a school could exist on private funding alone.
(d) To serve the families of the military.

4. What does Petra decide she wants to do after reading "Lo!"?
(a) Give the book to her adventurous cousin.
(b) Study odd happenings in the world.
(c) Draw some of her own odd happenings.
(d) Refute his theories.

5. What do the majority of the events in "Lo!" include?
(a) Animals falling out of the sky.
(b) A secret code.
(c) A series of strange faces hidden in the art.
(d) A distorted map.

6. What does Petra ask Calder to explain?
(a) About his box.
(b) About his grandmother and her knowledge of the painting.
(c) About his mathematical genius.
(d) About pentominoes.

7. How do Calder and Petra decide to help the Lady?
(a) By learning more about who the lady is.
(b) By hiring a private investigator.
(c) By talking to Ms. Hussey.
(d) By paying attention to everything around them.

8. What type of events is explained in the book Petra is reading?
(a) Normal events.
(b) Those based upon customs long past.
(c) Impossible events.
(d) Unexplained events.

9. Who is not feeling well?
(a) Petra's mother.
(b) Calder's grandmother.
(c) Calder.
(d) Mrs. Sharpe.

10. Where do Petra and Calder live?
(a) Near each other.
(b) Across the city from each other.
(c) In the same house.
(d) In the same apartment complex.

11. What shocks Petra?
(a) Calder is wearing a costume she recognizes.
(b) Two other girls from school are wearing the same dress.
(c) The woman in her dream is the same as is painted on Calder's box.
(d) The lady in her dreams is from a Vermeer painting.

12. Who is especially interested in the quote Ms. Hussey tells the students?
(a) Petra.
(b) Arthur.
(c) The genius of the class, Henrique.
(d) Calder.

13. From where do the clippings in "Lo!" seem to come?
(a) From handwritten articles.
(b) From newspapers from all over the world.
(c) From the internet.
(d) From newspapers no longer extant.

14. How do the students respond to Ms. Hussey's quote?
(a) They are puzzled.
(b) They are generally uninterested.
(c) They disagree for the most part.
(d) They are intrigued.

15. With whom did Calder usually spend his free time until recently?
(a) No one.
(b) Tommy.
(c) Petra.
(d) Robert.