VR00, I would definitely stick with the stats for other talent search participants even though it still may not be representative of the top 5 to 10%. I think that the above-level stats may be particularly problematic for the quantitative scores due to elementary math curriculum changes in the last two decades - lots of topics are pushed to earlier grades. Even though SCAT is supposed to measure ability, I think it only does so accurately for kids who have not been exposed to higher curriculum. Remember, you don't need exact answers on many of the math problems, which can be solved either intuitively or procedurely.