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http://nces.ed.gov/fastfacts/display.asp?id=1
On the 2009 PISA, U.S. 15-year-olds’ average score in reading literacy was 500, which was not measurably different from the OECD average of 493 (Possible scores on PISA assessments range from 0 to 1,000). The average reading literacy score in the United States was lower than the average score in 6 of the 33 other OECD countries, higher than the average score in 13 of the other OECD countries, and not measurably different from the average score in 14 of the OECD countries. Comparable reading literacy results were also reported for 31 non-OECD jurisdictions, 3 of which had higher average scores than the United States. In all participating OECD countries and non-OECD jurisdictions, girls outperformed boys in reading.
The U.S. gender gap in reading (25 points) was smaller than the OECD average gap (39 points) and smaller than the gaps in 24 of the OECD countries and 21 of the non-OECD jurisdictions.
In mathematics literacy, U.S. 15-year-olds’ average score of 487 on the 2009 PISA was lower than the OECD average score of 496. The average mathematics literacy score in the United States was lower than the average score in 17 of the 33 other OECD countries, higher than the average score in 5 of the other OECD countries, and not measurably different from the average score in 11 of the OECD countries. In 6 of the 31 non-OECD jurisdictions, the mathematics literacy scores of 15-year-olds were higher than the average score in the United States.
In science literacy, the average score of 15-year-olds in the United States was not measurably different from the OECD average score. The U.S. average science literacy score was lower than the average score in 12 of the 33 other OECD countries, higher than the average score in 9 of the other OECD countries, and not measurably different from the average score in 12 of the OECD countries. In 6 of the 31 non-OECD jurisdictions, the science literacy scores of 15-year-olds were higher than the average score in the United States.