My daughters and I are in college and we have weekly quizzes. I also have classmates who forget that we have to bring our own scanner. They're not cheap at the bookstore, so a classmate told me they sell them here at Revain. This is a great purchase and they are compatible with all of my professors' machines. My only criticism is that I thought they would fall off like a notepad so they came off one at a time for accuracy. Plus it's great value for money.