Relationship between Exposureto Class Size Reductionand Student Achievementin California


  • Brian M. Stecher RAND
  • Daniel F. McCaffrey RAND
  • Delia Bugliari RAND



Student Achievement, Class Size Reduction


The CSR Research Consortium has been evaluating the implementation of the Class Size Reduction initiative in California since 1998. Initial reports documented the implementation of the program and its impact on the teacher workforce, the teaching of mathematics and Language Arts, parental involvement and student achievement. This study examines the relationship between student achievement and the number of years students have been exposed to CSR in grades K-3. The analysis was conducted at the grade level within schools using student achievement data collected in 1998-2001. Archival data collected by the state were used to establish CSR participation by grade for each school in the state. Most students had one of two patterns of exposure to CSR, which differed by only one year during grade K-3. The analysis found no strong association between achievement and exposure to CSR for these groups, after controlling for pre-existing differences in the groups.


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Author Biographies

Brian M. Stecher, RAND

Brian Stecher’s research emphasis is applied educational measurement, including the implementation, quality, and impact of state assessment and accountability systems; the cost, quality, and feasibility of performance-based assessments, and the development and validation of licensing and certification examinations.

Daniel F. McCaffrey, RAND

Dan McCaffrey's research includes studies related to education and health policy. His current projects involve value-added modeling for estimating teacher effects and propensity score methods for comparing nonequivalent groups in quasi-experiments. He is also interested in nonparametric methods for estimating the standard errors for models fit to clustered data.

Delia Bugliari, RAND

Delia Bugliari specializes in analysis of education data on student achievement, school demographics, and teacher surveys. Her research interest includes missing data imputation in education and economic data.




How to Cite

Stecher, B. M., McCaffrey, D. F., & Bugliari, D. (2003). Relationship between Exposureto Class Size Reductionand Student Achievementin California. Education Policy Analysis Archives, 11, 40.




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