This is a comprehension test designed in the style of state assessments, which usually require much more thinking than simply "what happened in the story" questions.
I read this book in a small group, and after chapter 10 I give this assessment. It helps me to see how they are doing in terms of their deeper thinking and overall comprehension.
If you like the test, consider also buying the tests for Chapters 11-22 and 23-39. They're in a similar format and require plenty of inference. Also feel free to leave me any feedback for improvements.