2U. S. Department of Education, National Center for Education Statistics, Digest of Education Statistics,2002, NCES 2003-60, by Thomas D. Snyder, Project Director and Charlene M. Hoffman, Production Manager. Washington, D.C: 2003.p.97
4Monroe Waiters. Encyclopedia of Educational Research(fifth Edition)[M].New York: The Macmillan Publishing Co.,Inc, 1941.362.
5Robert L. Leight. Country School Mermorie[M].Westport: Greenwood Press,1999.8.
6Department of Education Fiscal Year 2005 Budget Summary and Background Information.58.[EB/OL].http://www.ed.gov./about/overview/ budget/ buget05.2008-08-10.
7Alice Duffy Rinehart. An Oral History of One-schooling[M].Westport: Greenwood Press, 1999.15.
8Department of Education Fiscal Year 2006 Budget Summary andBackground Information.19.[EB/OL].http://www.ed.gov./about/overview/ budget/buget06.2008-08-10.
