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Figure 1. Percentage of U.S. fourth- and eighth-grade students who reached each TIMSS international mathematics benchmark compared with the international median percentage: 2007

Percentage of U.S. fourth- and eighth-grade students who reached each TIMSS international mathematics benchmark compared with the international median percentage: 2007
*p < .05. U.S. percentage is significantly different from the Trends in International Mathematics and Science (TIMSS) international median percentage.
NOTE: The United States met guidelines for sample participation rates only after substitute schools were included and the National Defined Population covers 90 percent to 95 percent of National Target Population. The TIMSS international median represents all participating TIMSS jurisdictions, including the United States. The international median represents the percentage at which half of the participating countries have that percentage of students at or above the median and half have that percentage of students below the median. The standard errors for the estimates are shown in table E-5 available at http://nces.ed.gov/pubsearch/pubsinfo.asp?pubid=2009001.
SOURCE: International Association for the Evaluation of Educational Achievement (IEA), Trends in International Mathematics and Science Study (TIMSS), 2007.