What is a percentile score?

Percentile scores for individual test takers represent how an individual test taker's score compares to the scores of other test takers within a particular comparison group. Percentile scores range from the 1st  through 99th percentile, indicating the percentage of scores in the comparison group which are lower than the test taker's score. For example, if your scores report says that a test taker with a CCTST total score of 19 is in the 67th percentile, this means that this test taker has tested better than 66% of the test takers compared to an aggregated sample of test takers like themselves. As the test administrator, you choose the comparison group when you make a test assignment for your employees or students.