U.S. Department of Education
Richard W. Riley
Secretary
National Educational Research Policy and Priorities Board
Kenji Hakuta
Chair
Eve M. Bither
Executive Director
January 1999
This publication was prepared under contract to the National Educational Research Policy and Priorities Board. Any opinions, findings, or conclusions are those of the author and do not necessarily reflect the views of the U.S. Department of Education or any agency of the U. S. Government.
Comments about this publication may be directed to:
The National Educational Research Policy and Priorities Board
U.S. Department of Education
80 F Street NW, Suite 100
Washington, DC 20208?7564
Telephone: (202) 208?0692
Fax: (202) 219?1528
E-mail: nerppb@ed.gov
Contact:
Mary Grace Lucier
(202) 219?2253
NERPPB Web site: http://www.ed.gov/offices/OERI/NERPPB/
The Board wishes to thank Emerson Elliott for his unfailing assistance to the Board and for his efforts in the preparation of this manuscript.