Wide Range Achievement Test: A One-Year Stability Study

Abstract

This study examined the stability of the 1965 and 1978 Wide Range Achievement Test standard scores for a total sample of 115 kindergarten, first, and second grade students on the Hopi Indian Reservation in Northern Arizona. Results indicate satisfactory stability over a 1-yr. interval for the Reading, Spelling, and Arithmetic subtests using both the 1965 and 1978 editions. At the same test administration, the 1965 and 1978 standard scores correlated significantly with each other. Standard score subtest means derived from the 1965 and 1978 editions of the WRAT were compared and determined to be, in most cases, significantly different from one another.