How Two Readers Make a Domain Score

The essay is scored on four domains, and each domain is graded separately by two readers working independently. Each reader rates that domain on a scale of 1 to 6. The domain score is just the sum of the two ratings, which is why a single domain can land anywhere from 2 (two 1s) up to 12 (two 6s). This is true for all four domains, and they fill independently, so a strong Organization score and a weaker Development and Support score can sit side by side on the same essay.

The two readers never see each other's ratings before giving their own, so the system checks how close they land. If their ratings are within one point of each other, the sum stands as the domain score. If the gap is more than one point, a third, more experienced reader rates that domain fresh, and that third rating becomes the one used to settle the domain score, replacing the need to just average the two original numbers. This keeps one reader's harsh or generous mood from skewing a domain on its own.

This two-reader-plus-tiebreaker system matters because it ties the whole essay score to four separate sums rather than one holistic number, which is what lets a student see exactly which domain, Ideas and Analysis, Development and Support, Organization, or Language Use, needs work.