• What is the Cognitive Abilities Test?

    The Cognitive Abilities Test (CogAT) is a nationally standardized, norm-referenced test (NRT).


    Who takes the CogAT test here in the Yorkville School District?

    The test is administered to all 2nd and 4th grade students, in the fall.


    What does the CogAT measure?

    The CogAT test is a measure of reasoning and problem-solving skills. These reasoning abilities have substantial correlations with learning and problem solving, both in and out of school and will develop gradually throughout a person’s lifetime and at different rates for different individuals. Research has shown that reasoning abilities are good predictors of success in school.

    CogAT does not measure such factors as effort, attention, motivation, and work habits, which also contribute to school achievement.

    Here in Yorkville, we test in 2 different areas; verbal and quantitative. 


    How are the sections of the CogAT different?

    • The Verbal Battery measures a child’s ability to remember and transform sequences of words, to understand them, and to make inferences and judgments about them.
    • The Quantitative Battery tests the child's understanding of basic quantitative concepts and relationships that are essential for learning mathematics. Tasks measure both the understanding of relational concepts and the student’s ability to discover relationships and to figure out a rule or principle that explains them.


    What type of results does the CogAT provide?

    The CogAT is nationally normed, which means an individual’s test performance can be compared with the test performances of other students throughout the nation who are the same age.

    In addition, local norming is also available, which means and individual’s test performance to be compared to other students within the same school district who are the same age.


    How are the results of the CogAT test used in Yorkville?

    In Yorkville, the results are one of the measures used for gifted and talented identification. 


    Sample CogAT Score Report:



    No. of  






     USS Age Scores Grade Local
            SAS       PR      S PR       S PR        S
    Verbal 48 48 32 166 102      55     5 61       6 57        5
    Quantitative 48 48 36 174 105      62     6 71       6 68        6



    Raw Score- The first unadjusted score obtained from a battery of tests. It is usually determined by adding the number of correct responses.

    Universal Scale Score (USS)- This is a standard score that is used for the age and grade norms table. It is used to obtain scores such as the Standard Age Score (SAS) and the Grade Percentile Rank (GPR).

    Standard Age Score (SAS)- This has a mean or an average of 100. The purpose of this score is to compare the rate and the level of cognitive development of an individual student when compared to other students of the same age.

    Percentile Rank (PR)- This score can range from 1 – 99 by indicating the percent of individuals who scored lower in the same group (compared by age or by grade).

    Stanine (S)- The word Stanine has been created from the words “standard nine”. These are standard scores that can range from 1 – 9. An easier way to think about them is groupings of percentile ranks.


    Approximate Percentile Rank Range    
    Stanine Descriptor
    96-99 9 High
    89-95 8 Well Above Average
    77-88 7 Above Average
    60-76 6 Somewhat Above Average
    41-59 5 About Average
    24-40 4 Somewhat Below Average
    12-23 3 Below Average
    5-11 2 Well Below Average
    1-4 1 Low