In addition, in Illinois between 1992 and 2009 there was a 14% increase in students, and a 27%, or almost double, increase in educational staffing.

http://m.cnsnews.com/news/article/zoey-dimauro/study-half-all-school-employees-not-teachers-130-increase-1970?utm_source=Facebook&utm_medium=NewsBusters&utm_term=Facebook&utm_campaign=N-school-teachers