CSR Research Consortium - Provides news, evaluation reports and other information from a consortium of four major research organizations working in partnership on a four-year (1998-2002) comprehensive study of the implementation and impact of California’s class-size reduction initiative....

ERIC Clearinghouse on Educational Management - Provides abstracts and full text of a wide range of research reports on class-size reduction initiatives....

HEROS, Inc. - The Web site of this nonprofit organization based in Lebanon, Tennessee, provides the full text of various research reports on the impact of class-size reduction initiatives in the United States and abroad, including the original Tennessee Student/Teacher Achievement Ratio (STAR) project report and several follow-up STAR reports published over the past 10 years....

U.S. Department of Education Class-Size Reduction Program - Offers a wide variety of information about the federal government’s seven-year, $12.4 billion initiative to help schools hire new teachers and reduce class size in the early grades....