We have cameras all over the school, including the library. They are placed all around the library. I think they see most of the library. No one bats an eyelash. Sometimes when kids a misbehaving, I warn them that the cameras can see what they are doing. The administration rarely checks them. It's only done if something bad happens like when we tried to catch the student who repeatedly drew pictures of the male anatomy on our couches. No parent or student has every complained to my knowledge.