▁ ▁Ex cept ▁for ▁the ▁English ▁section ▁and ▁the ▁Korean ▁History ▁section , ▁all ▁gr ades ▁are ▁based ▁on ▁a ▁curve , ▁by ▁Stan ine . ▁Gra de , ▁percent ile ▁and ▁standard ▁score ▁of ▁each ▁section ▁and ▁subject ▁are ▁written ▁in ▁trans cript . ▁The ▁standard ▁score ▁is ▁calculated ▁by ▁the ▁formula ▁below : ▁▁ ▁is ▁standard ▁score . ▁ ▁is ▁Z ▁score . ▁ ▁is ▁standard ▁deviation ▁of ▁the ▁standard ▁score . ▁ ▁is ▁average ▁of ▁the ▁standard ▁score . ▁In ▁National ▁Language ▁and ▁Mathemat ics ▁section , ▁ ▁is ▁set ▁to ▁be ▁ 2 0 ▁and ▁ ▁is ▁set ▁to ▁be ▁ 1 0 0 . ▁For ▁the ▁rest , ▁ ▁is ▁ 1 0 ▁and ▁ ▁is ▁ 5 0 . ▁ ▁is ▁calculated ▁by ▁the ▁formula ▁below : ▁▁ ▁is ▁the ▁candidate ' s ▁original ▁score . ▁ ▁is ▁the ▁average ▁of ▁the ▁original ▁scores ▁of ▁candidates ▁in ▁the ▁subject . ▁ ▁is ▁the ▁standard ▁deviation ▁of ▁candidates ▁in ▁the ▁subject . ▁ ▁D iff icult y ▁ ▁Comp ared ▁to ▁S AT ▁ ▁The ▁CS AT ▁is ▁often ▁compared ▁to ▁the ▁American ▁S AT , ▁though ▁the ▁importance ▁in ▁both ▁countries ▁is ▁fairly ▁different . ▁S AT ▁Math ▁is ▁generally ▁thought ▁of ▁as ▁easier ▁than ▁CS AT ▁Math . ▁ ▁Ex amples ▁ ▁Mathemat ics ▁ ▁Calcul us ▁ ▁Below ▁is ▁the ▁ 3 0 th ▁problem ▁in ▁Mathemat ics ▁subject ▁type ▁Ga ▁of ▁CS AT ▁held ▁in ▁ 2 0 1 6 . A ▁function ▁