Understanding Test Scores Used in Psycho-Educational Assessments

  • Test scores can be confusing, but they don't have to be.  Here are answers to a few questions regarding test scores:

    What is a STANDARD SCORE?

    Standard scores are the scores used in the majority of standardized tests.  Standard scores have a mean of 100 and a standard deviation of 15.

    What is a PERCENTILE RANK?

    A percentile rank compares a student to others of the same age.  It uses a hypothetical group of 100 students to identify how a student performed compared to others.  For example, a percentile rank of 50 indicates that the student's test performance equals or exceeds 50 out of 100 students at the same age.

    Do I have to have an understanding of these test scores to understand a psychological evaluation?

    No.  In all of my reports, I provide descriptions of each student's score to help the reader understand the student's abilities.  These descriptions include "average", "low", "superior", etc.

    How will I remember this information when I read a psychological report?

    You don't need to!  I include score definitions as footnotes in each psychological report that I write.  If a score (or anything else in the report) is still not clear after I present the results to you and after you have had a chance to read the report, I am more than willing to review this information and answer any questions you have.

    It is my hope that this information makes understanding test scores easier.  If you have any questions, please contact me.