PACE-WestEd would like to thank the many district officials and school staff who agreed to participate in this study. We are also grateful for the input received by participants at our Class Size Research Consortium meetings on the design of this study, including advice from representatives of the American Institutes for Research (AIR), RAND, EdSource, Association of California School Administrators (ACSA), the California Department of Education, the California Research Bureau, the San Diego Unified School District, the Long Beach Unified School District, the San Francisco Unified School District, the Alameda County Office of Education, CRESST, California Education Research Cooperative at the University of California, Riverside. Special thanks is due to the thoughtful and constructive feedback provided on the design of this study by Barbara Miller and Trish Williams, EdSource and Joan Herman, CRESST. We are also grateful for the valuable advice provided by Lynn Winters, Long Beach Unified School District on the evaluation design and draft report and the thoughtful and helpful comments provided by Brian Stetcher at RAND and Paul Hood and Joan McRobbie, WestEd. Patricia Gándara and Linda Petersen Birky contributed substantially to the design and conceptualization of this report. We are also indebted to Diana Smith, Tracy Landauer and Roger Scott for their support with research and data collection. Editorial and report production was undertaken by the leadership of Christian Holden, with the assistance of Patrick Flick and Doris Smith, WestEd. We are forever grateful for their diligence and attention to detail. Funding for this paper is partially provided by the U.S. Department of Education, Office of Educational Research and Improvement. The contents of this document do not necessarily reflect the views or policies of the U.S. Department of Education. For additional copies, see http://www.wested.org/policy or contact the individuals below.
	Lisa Carlos, Program Director Policy Support and Studies WestEd 730 Harrison Street San Francisco, CA 94107 (415) 565-3085 lcarlos@wested.org   Edward Wexler Policy Analysis for California Education (PACE) School of Education, University of California at Berkeley Berkeley, CA 94720 (510) 642-7223 ewex4@uclink4.berkeley.edu