加号可能因为当时看到分数在十年级的分数线下一点点,我自动补脑为九年级+了 LOL
What is a Norm Group or a Comparison Group?
COMPARISON GROUP: The term "relative to grade level" refers to a nationwide sample of students at the grade level indicated. Because your child took an above-level test, the comparison group is at a higher grade level.