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Document Number: 5937

The Relationship between Exposure to Class Size Reduction and Student Achievement in California - California’s large and diverse student population provides an ideal real-world test for the effects of implementing class size reduction (CSR) programs on a large scale. This study examines student achievement data collected between 1998 and 2001 to determine the effects of CSR on student achievement, finding that most students had one of two patterns of exposure to CSR. The analysis finds no strong correlation between achievement and exposure to CSR after controlling for preexisting differences in the two groups. However, the authors conclude that "...we should make the most cautious intepretation that, in the context of a K-3 program of reduced class sizes, a one-year incremental difference in exposure has no effect." (Brian M. Stecher and Delia Bugliari, RAND, November 2003)...


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Class Size

 
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