“…Substantial reports not only supported the correlation between grade performance and retention, but also identified grade performance as the single most important factors in predicting student persistence (Achord & McCary, 1974;Aitken, 1982;Astin, 1972Astin, , 1975Blanchfield, 1971;Brag, 1956;Conner, 1968;Fullmer, 1956;Hayes, 1981;Lenning, 1982;Lenning et al, 1980;Little, 1959;Morrisey, 1971;Pedrini & Pedrini, 1977;Rever & Kojaku, 1976;Slocum, 1956). After reviewing 35 studies on college grades and attrition, Summerskill (1962) reported that one out of three dropouts occurred for academic reasons.…”