As institutions of higher learning have seen the aging of American college students, they have been increasingly concerned about helping them overcome what deters their reentry. Adult perception of deterrents is identified in this study. Analysis and the factor structure underlying these deterrents is examined in the Situational, Institutional, and Dispositional category of deterrents. Six factors with no extraneous items were identified: bad experience, institutional reasons, lack of resources, course offerings, cost/benefit ratio and childcare were identified for potential adult students at a small private tuition-driven undergraduate college. This complex set of findings fits with barriers established in the literature. Bad Experience, a dispositional barrier, and the Institutional factor correspond to Cross' (1981) typology. Lack of Resources and Course Offerings are spread among situational, institutional and dispositional factors. Cost/Benefit Ratio is situational and institutional. Childcare is situational. This study contributes to a complex model of deterrents to participation. (Contains 2 tables.)