8[9]Hanushek, Eric A. 1998."The evidence on class size" .Public Testimony,Washington, DC.
9[10]Greenwald,Rob,Larry V.Hedges,and Richard D.Laine.1996."The effect of school resources on student achievement. "Review of Educational Research 66(3).
10[11]Wenglinsky, Harold. 1997. When money matters:How educational expenditures improve student performance and how they don' t. Princeton, NJ:The Educational Testing Service,Policy Information Center.
