One of the criteria for our school's gifted program is that a child's score (in all three categories) on the CogAT must be at least two standard deviations from the mean.

Can anyone tell me what that means or what an example score that's 2 std dev. from the mean would be?

Or is this a score that changes every year depending on the kids taking the test? If so, a ballpark number would help me.

Thanks!