Because of Arizona state budget cuts Arizona elementary, middle and high school librarians were transferred out of the school libraries. Some were placed in school classrooms. Many of the librarians choose to retire instead.
School Aids, not necessarily trained or certified Library Technicians/Paraprofessionals, will take over the duties of running the school libraries. There is discussion about having the aids take a library technology certification program at Mesa Community College but as it stands now there is no formal training.
You can read the news story at the Arizona Republic website. In addition please read some of the comments. There are folks that believe because there is access to the Internet that librarians are no longer needed. There are other people who make a good case that search has become much more complicated and you need trained professionals to access quality and reliable information.