<p>You don't do anything. THey simply take your highest scores from all your sittings and they "superscore" your SAT's. Meaning they take your highest scores and create the largest SAT total they can possible make. EG: You receive 700 700 700 first sitting, second sitting 650 800 650. They take your two 700's form the first sitting and the 800 from the second sitting and make that a 2200 combined.</p>