Shanghai tops international test scores

Test scores to be released Tuesday from the Program for International Student Assessment show that 15-year-olds from several European and Asian nations and regions within nations outperformed U.S. students in reading, math and science.

Test scores to be released Tuesday from the Program for International Student Assessment show that 15-year-olds from several European and Asian nations and regions within nations outperformed U.S. students in reading, math and science.

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