The international test is not a measure of grade-level curriculum, but rather a gauge of the skills of 15-year-olds and how well students can apply them to problems they may face in life.

• 国际间考试，并不针对级别课程的计量，而是衡量这群15岁学生的技能，及他们把技巧运用在生活难题的表现程度。