Stanine scores range from a low of I to a high of 9. Stanines are groupings of percentile ranks. A higher stanine equates with a higher level of cognitive abilities development. A comparison of Stanines and Percentile Ranks are summarized in the table below:
Stanine
9
8
7
6
5
2
1
4
3
Percentile Rank
96-99
89-95
77-88
60-76
40-59
23-39
11-22
4-10
1-3
Description
Very High
Above Average
Above Average
Average
Average
Average
Below Average
Below Average
Very Low
Differences in percentile scores can lead to over interpretation of small differences in scores between individual students or among scores for the same student. For example, there will be no observable differences in the classroom between a student who has a Percentile Rank of 45 and one with a Percentile Rank of 55. They would both exhibit average levels of development in a particular area. On the other hand, you would see observable differences in the classroom for students with more than one stanine difference in their scores. Three different students with Stanines of 9, 6, and 4 will show clear differences in the ways they approach learning and problem solving tasks, in the ways they interact with different instructional strategies and leasing environments, in the rate in which they learn, and in the amounts and kinds of help they need to learn successfully.
Adapted from “interpreting Cognitive Abilities Test Scores” Riverside Publishing

CogAT Score Profiles
CogAT score profiles identify both the level of the student’s scores and the pattern of scores across the batteries.
The Level of Scores is represented by the student’s middle age stanine across the three sections of the
CogAT. For example, if a student scored in the 8 th stanine for verbal, the 3 rd stanine for quantitative, and the 5 th stanine for nonverbal, the middle age stanine used in the score profile would be 5 th .
The Pattern of Score is indicated one of the following ways:
A Profile: The student’s verbal, quantitative, and nonverbal scores are roughly at the s A me level.
B Profile: One of the three scores is either a B ove or B elow the other two. The student’s profile will either show a relative strength OR a relative weakness.
C Profile: There is one score above and one score below creating a C ontrast. This student’s profile will show both relative strength and a relative weakness.
E Profile: If a B or C profile represents a point difference in the SAS score of 12 points or more, it is considered E xtreme. An E profile calls attention to the scores difference.

Using CogAT to Inform Instruction
Visit the link below to view a short video from the makers of CogAT about how the assessment can be used to inform instruction for all students.
CogAT: Link Assessment to Instruction

Information from the University of Minnesota website: http://oms.umn.edu/oms/mstp/tests_and_services/ability_tests/cogat6/footnotes.php