Conversion of High School Grade Averages Reported in Different Systems1

Abstract

Using data from a national random sample of 16,685 high school seniors collected in 1972, 10 different grade average reporting systems were analyzed by means of a nonlinear least squares procedure. A grade conversion table was created by relating reported grade averages in all of the systems to common percentile ranks in class. It was suggested that the 10 systems are probably reducible to only 4 fundamentally different systems.