Goal instability and its relation to career thoughts, decision state, and performance in an undergraduate career course in a large university were investigated in this study. Participants completed six instruments measuring the nature of goals, career thinking, occupational decision making, satisfaction with career choice, tension associated with career decisions, and a performance contract of course activities to be completed for a grade. Bivariate correlations and multiple regression analyses indicated that the degree of goal instability was directly related to negative career thoughts, dissatisfaction with career choice, career tension, and inversely related to classroom performance. Results of the analyses suggested that goal instability may serve as an initial global screening measure of readiness for career exploration in a classroom environment. The use of supplementary readiness measures is discussed.