title: Class Size and Student Achievement.
authors.affiliation: Cornell Higher Education Research Institute, ILR-Cornell University, Ithaca, New York rge2@cornell.edu.
authors.forename: R G
authors.initials: RG
authors.lastname: Ehrenberg
authors.affiliation: RAND Education, Santa Monica, California.
authors.forename: D J
authors.initials: DJ
authors.lastname: Brewer
authors.affiliation: Department of Sociology, University of Wisconsin, Madison, Wisconsin.
authors.forename: A
authors.initials: A
authors.lastname: Gamoran
authors.affiliation: Canadian Research Institute for Social Policy, University of New Brunswick, Fredericton, New Brunswick, Canada.
authors.forename: J D
authors.initials: JD
authors.lastname: Willms