What do DSST Scores Mean?

[bushidoforgotten]

I recently took the Ethics in America test and scored a 458 (minimum passing score being 400). I know that for CLEP and other exams, they use mean scores and standard deviation to determine two digit scores, which tell a student about how much of the populace they outscored.

So my question for DSST is 458 out of what? And how does this translate to how many I missed or what percentile I fell within? I am happy that I passed, but I am curious to know by how much...