These bookmarks allow teachers to keep tabs on what students are reading at home and in class in an informal way. After reading a book students, fill out a bookmark and hand it in. You could return the bookmarks every so often so students can reflect on their own reading practices.
I begin the year with an easier version of this bookmark, where students simply rate the book out of 10. This version requires them to write in sentence justifying their rating.
An easy and quick assessment tool!