Composite percentiles for December SAT?

<p>I'm looking all through the college board website, but I can't seem to find any indication of a composite percentile. Anybody know if there's a function for this? </p>

<p>Meanwhile,
what do you all think a 99th Reading (760), 96th Math (780), and 96th Writing (710) would amount to for a composite percentile (2250)?</p>

<p>That would be a 99th, most likely.</p>