attainment原本意思是成就 达到 造诣 这里明显是指得分 达到的分值attainer 得分者incidentally意思是顺带一说这句话意思是：Large sample international comparisons of pupils' attainment /since the 1960s have established that /not only did Japanese pupils at age 13 have better scores of average attainment,/but there was also a larger proportion of 'low 'attainers in England,/where,incidentally,the variation in attainment scores was much greater.学生得分的国际比较大样本自从1960年代建立以来，不止日本13岁学生得到了更高的平均得分，而且也有更大比例的低分得分者在英国，顺带一提，英国的得分者有更大的分数差距。
格桑之门
