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T Scores

T scores are used to tell individuals how far their score is from the mean. T scores have a mean of 50 and a standard deviation of 10. Therefore, if a student’s raw score was converted to a T score and their T score was 70 it would in turn mean that their score was 20 points above the mean. One advantage of using a T score over a z score is that T scores are relatively easy to explain to parents when reporting the student’s assessment scores.