2[1]Krashen, S.D. Second Language Acquisition and Second Language Learning[M]. Oxford: Pergamon Press,1981.
3[9]Hanushek, Eric A. 1998."The evidence on class size" .Public Testimony,Washington, DC.
4[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).
5[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.
6[12]Mueller, Daniel J. ,Clinton I. Chase,and James D. Walden. 1988. "Ef fects of Reduced Class Size in Primary Classes. "Educational Leadership 45(7).
7[13]Achilles,Charles M., Barbara A. Nye, Jayne B.Zaharias, B. DeWayne Fulton, and C. Cain. 1996. "Education' s Equivalent of Medicine' s Framingham Heart Study". Washington, DC: ERIC Clearinghouse. ED 402677.
8[14]Finn 1998. Nye, Barbara, B. DeWayne Fulton, Jayne Boyd - Zaharias, and Van A. Cain. 1995.The Lasting Benefits Study,Eighth Grade Technical Report. Nashville,TN:Center of Excellence for Research in Basic Skills, Tennessee State University.
9[15]See Mosteller 1995, Finn 1988, and Kickbusch, Ken. 1996. "Class Size. " Madison, WI: Wisconsin Education Association Council, Professional Development Division. www. weac. org/resource/may96/classize. htm
10[16]Mosteller, Frederick, Richard J. Light, and Jason A. Sachs. 1996. "Sustained Inquiry in Education: Lessons from Skill Grouping ani Class Size."Harvard Educational Review66(4).
