I was working on explaining to another a parent about how tests differ and results can vary, when I came up with a quick analogy. (I am sure someone else probably already has used this). Its like a picture, you don�t see everything about the person, only what they show you in the picture. The picture needs a good camera (the test) and a good photographer (the tester). A good camera and a good photographer need a cooperating subject, or have the ability to bring out the best from the subject. Not all photographers work best with all subjects. All three are part or creating a good picture. Many times you will need different pictures to get a better view of what the subject can offer.
Last edited by Edwin; 10/19/11 08:55 AM. Reason: missing words