Background and Objectives: The use of on-line syllabi to acquire information about a course, clerkship, or rotation is growing. This study investigated the number of existing family medicine clerkship Web sites with syllabi and determined their completeness and usability. Methods: In sping 1999, all schools with third-year family medicine clerkship Web sites were identified (n = 71) using Association of American Medical Colleges and American Academy of Family Physicians clerkship directories to identify required family medicine clerkships, followed by a Web search to identify any associated Web sites. A checklist with I I content and 5 technical categories was developed and pilot tested. All sites were evaluated by at least two investigators. Two identifiable checklist characteristics were required to be present for a site to be identified as an on-line syllabus and included in the study. Results: Of the 71 sites initially identified, 40 were included in the study, 22 were excluded, and 9 required further review by an additional evaluator A total of 44 sites were included in the study. The most common content features identified were instructor information, goals, overview, and requirements. Less-common-features included objectives, learning resources, schedule, and grading policy. Conclusions: A minority of family medicine clerkships have on-line syllabi. Most sites have basic information, but other relevant clerkship information is absent. New and revised family medicine clerkship on-line syllabus development would benefit from using the checklist to guide the creation of instructionally sound educational resources.