My IQ was tested every couple of years from Kindergarten age through junior high or so.
At some point after that, my mother told me that my scores went down every time I took the test, although I never learned what the scores were.
I found out much later that this wasn't important but it was rather troubling to me at the time. Was I becoming dumber?
I have looked through some IQ tests over the years and I feel the same about them as I do the SAT's.
Some parts are incredibly easy for me, and some parts might as well be in a foreign language.