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Document Number: 2509

The Trends in International Mathematics and Science Study - In 1995, 1999, 2003, 2007, and 2011, TIMSS-R collected data at the 4th- and 8th-grade levels to provide information about change in the mathematics and science achievement of our students compared to those in other nations. This Web site includes information on which countries participated, how student achievement was measured, what contextual information was collected and how to obtain the results....

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