查了成绩解读，很清楚

PERCENTILE: The percentile score allows you to see the percentage of students who scored lower than your child on the SCAT. It is extremely important for you to understand that your child was not compared to students in his/her same grade. We compare your child's raw score to scores obtained by an older group of students. If your child scored in the 50th percentile, your child???s performance on the test was better than 50 percent of the children two (2nd-4th) or three (5th-6th) grades above your child who took the test. EXAMPLE: "63 (compared to Grade 4)" means your 2nd grade child scored better than 63% of a normative population of students in grade 4.

所有跟帖： 

• 写得很清楚，但你理解错了。看我下面的解释吧。 -CirrusCloud- ♀ (0 bytes) () 09/20/2014 postreply 16:58:54

• 你还是给我解释解释99% 的成绩和30%达到这个水平的关系吧 -yashang- ♀ (42 bytes) () 09/20/2014 postreply 17:03:28

• 你这99%tile是指在所有同年级的学生中，30%是指在被邀请去考试的同年级学生中，如果 -mom1013- ♀ (107 bytes) () 09/20/2014 postreply 17:15:56

• 比如说你们学区有1000个7年级学生有10个学生被邀请去考试，有3个 -mom1013- ♀ (381 bytes) () 09/20/2014 postreply 17:22:43

• bingo, 清楚明白，再次感谢：） -yashang- ♀ (0 bytes) () 09/20/2014 postreply 17:27:47

• 理解错的是K妈，不是我哈。 -yashang- ♀ (0 bytes) () 09/20/2014 postreply 17:04:07