GRADE NORM By N., Pam M.S. - May 11, 2013 the name for the standard score or the range of scores representing average achievement of a set group of people. See grade equivalent. GRADE NORM: "The grade norm is the standard score." Related Psychology Terms BANDING STANDARD SCORE AVERAGE ABSOLUTE DEVIATION T SCORE SCHOOL AND COLLEGE ABILITY TEST (SCAT) ACHIEVEMENT AGE (AA) QUARTILE GRADE EQUIVALENT GRADE SCALE BENCHMARK Cite this page: N., Pam M.S., "GRADE NORM," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/grade-norm/ (accessed January 21, 2021).