For the entire article: http://www.schoollibraryjournal.com/slj/home/891612-312/something_to_shout_about_new.html.csp#data
"Our research also indicates that these lower reading scores can’t be blamed on cuts to other school staff. Regardless of whether there were fewer classroom teachers schoolwide, students in states that lost librarians tended to have lower reading scores—or had a slower rise on standardized tests—than those in states that gained librarians."