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How to Calculate PR for CogAT Tests

The Cognitive Assessment Test (CogAt) is used in many elementary schools in the United States to help determine whether a student has the ability to enter a gifted program. The percentile rate (PR) score from this test ranks the student's performance in comparison with all the other students who took the test. Scores above 50 percent show the child is ahead of other children in his grade, while scores below 50 percent show that the child is behind other children in his grade.

Instructions

- 1
  Review all of the scores for each child in your school or classroom who took the test.
- 2
  Average the test scores of all of the test-takers. The average score of all students is considered the 50th percentile mark for that class or school, where half the students scored higher and the other half scored lower.
- 3
  Look at each child’s individual score. If the score is lower than the average grade of the class or school, then the child is below the 50th percentile for that class. If the child’s score is higher, then the child is above the 50th percentile.
- 4
  Calculate the child's score as compared with the national average. The PR score for each student who took the test is printed on the test-results sheet next to the overall scores for each test section.

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