In Michigan, there are 60 percent fewer [school] librarians than just ten years ago...

http://www.mcls.org/news/2015/12/23/making-a-difference-for-school-libraries-by-mcls-executive-director-randy-dykhuis/

Article worth reading.  A sad commentary on the state of Michigan school libraries.  I know a lot of my colleagues have lost their positions and many school libraries are closed.  Sixty percent is more than I thought.