GRADE NORM By N., Sam M.S. - 33 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 SCHOLASTIC APTITUDE TESTS SOCIAL NORM (Group Norms) ACHIEVEMENT TESTS APRAXIA (literally, “inability to act or do”) MUSIC TESTS READING DISABILITY (Paralexia, Dyslexia) RORSCHACH TEST LEVEL OF ASPIRATION RACE DIFFERENCES READABILITY RESEARCH Cite this page: N., Sam M.S., "GRADE NORM," in PsychologyDictionary.org, May 11, 2013, https://psychologydictionary.org/grade-norm/ (accessed November 27, 2021).