The intent of this study was to investigate the adequacy of Weidman's (1985, 1989) theoretical undergraduate socialization model as an empirical-based causal model pertaining to women's career path choice into a science or engineering (SE) major via structural equation modeling. Data were obtained from the Beginning Postsecondary Students Longitudinal Study (1996-2001) from the U.S. Department of Education. Results indicate that Weidman's model was somewhat supported. Results from the evaluation of the causal model suggest that women's path into an SE major was influenced by both collegiate and non-collegiate factors, with 1st-year college grades and high school math grades being the dominant indirect influences. (Contains 3 figures and 1 table.)