This study uses historical data to explore the consistency of SAT® I: Reasoning Test score conversions and to examine trends in scaled score means. During the period from April 1995 to December 2003, both Verbal (V) and Math (M) means display substantial seasonality, and a slight increasing trend for both is observed. SAT Math means increase more than SAT Verbal means. Several statistical indices indicate that, during the period under study, raw-to-scale conversions are very stable, although conversions for extreme raw score points are less stable than are other conversions.