Fight Against SPARKNOTES!
Like most teachers, early on in my career I gave reading quizzes as a means of holding students accountable for their reading assignments. What I found, of course, was that students would turn to Sparknotes and other websites, looking for chapter summaries rather than actually completing their reading assignments. As a result, my quizzes had one of two unintended consequences. I wound up either writing a quiz that encouraged students to take shortcuts, or I made a quiz that was so difficult that it punished students that actually did the work.
My solution to this problem was to start assigning ANNOTATIONS in place of reading quizzes. In short, I give the student a list of details to find and margin notes to write, and the student highlights their book and writes margin notes in each individual chapter.
This is a complete list of annotations for Kurt Vonnegut's Slaughterhouse-Five. There are three sets of Annotations, and each set covers three or four chapters. This is a great way to get students to dig deeper into their text, and it is a much more effective alternative to traditional comprehension quizzes.
As far as grading is concerned, I grade the books in two ways, depending on my classroom plans and time. Sometimes I walk around the room spot checking books. (I look for three or four specific annotations, but the students have no idea which ones I'm searching for). I will also collect books and give the annotations a more comprehensive grade at least twice over the course of the unit.