Undergraduates (N = 459) completed a survey in which they rated the appropriateness of various materials that might be posted on the outside of faculty office doors. Results indicated that students considered school-related items to be the most appropriate for posting on faculty doors; items of personal expression were rated second most acceptable, and political/social items were considered least appropriate. Postings of information related to office hours, advising, and research/employment/scholarship opportunities were strongly supported. Students were more divided about personal expressions by faculty, with the most acceptable postings being quotes from famous authors or philosophers and university sports-related signs. There was a notable drop off in approval for nonpolitical cartoons, family pictures, and hobby-related pictures or announcements. The area of political/social expression received the smallest endorsement of the three categories. Among the least objectionable items in this category was the expression of support for some social causes such as Mothers Against Drunk Driving. Students generally did not approve of faculty members posting expressions of religious or political beliefs, or views on controversial issues such as abortion. When asked if they had ever become upset or angry about something they saw on a faculty office door, 11% responded affirmatively. (Contains 1 table.)