<p>Broken record, I’m sorry. VaMom3, please look at the other posts regarding comparing 1966 and 2006 test scores. No, the fact that the tests were recentered in by 100 points in 1995 DOES NOT mean that you can add 100 points to a 1966 test score to get an equivilent in 2006. It only means that you can subtract 100 points from the next giving of the test, in 1996, to get an equivilent 1995 score, because the demographics of the test takers would have been essentially the same for those two years. The nature of the test and the test takers have changed so often and so much since 1966 that you cannot compare. Theoretical center has drifted around too, not just the 1995 big shift.</p>