For DYS, you need two of the following at or above 145: Broad Reading, Broad Math, Broad Writing, and Total Achievement.

I have never seen a "broad achievement" score but just a parent here. Do you mean a "brief achievement" score" Anyhow, if you have three subtests for each of the Broad categories (Reading, Math & Writing) for a total of nine subtests, then you can calculate a Total Achievement score. Alternative, use two broad scores.