Percentage of an entering freshman class graduating in four years. Also called the adjusted cohort graduation rate (ACGR), the measure is derived by dividing the number of students who graduate in four years (including the summer following their fourth year of high school) with a regular high school diploma by the number of students who form the adjusted cohort for the graduating class. Students entering grade 9 for the first time form a cohort that is “adjusted” by adding any students who subsequently transfer into the cohort during the next three years and subtracting any students who transfer out, emigrate to another country or die during the same period. Students who drop out of high school remain in the adjusted cohort—that is, the denominator of the cohort graduation rate calculation.

Percentage of an entering freshman class graduating in four years. Also called the adjusted cohort graduation rate (ACGR), the measure is derived by dividing the number of students who graduate in four years (including the summer following their fourth year of high school) with a regular high school diploma by the number of students who form the adjusted cohort for the graduating class. Students entering grade 9 for the first time form a cohort that is “adjusted” by adding any students who subsequently transfer into the cohort during the next three years and subtracting any students who transfer out, emigrate to another country or die during the same period. Students who drop out of high school remain in the adjusted cohort—that is, the denominator of the cohort graduation rate calculation.