Elementary, my dear

When I signed my daughter up for her new school, we spent about an hour sitting in the attendance lady's office. There was very little to look at, so I read the titles of all the books on the shelf. This one struck me as odd:

"cum folders"

I made my daughter (who I cropped out) stand in front of the case for a "new school" picture. We all know what I was really trying to photograph...