fair fare around average Washington Post reported PISA scores mediocre test scores in math and science Washington Post reported measurable improvements half a million students half a million students math, reading and science scores United States American students lagging Encourage them to learn the sciences PISA scores school curriculums international counterparts international counterparts already-lagging many Americans other countries are outpacing the United States in education United States PISA scores school curriculums PISA scores Encourage them to learn the sciences アメリカ article