Family Medicine Computer-Assisted Simulations for Educating Students (fmCASES), is an Internet-based virtual patient program addressing the core curricular objectives of the Society of Teachers of Family Medicine's (STFM) Family Medicine Clerkship Curriculum. The fmCASES program consists of 40 cases: 29 cases created in 2009-2010, 4 cases in production 2010-2011, 5 cases from the pediatrics clerkship curriculum's cases (CLIPP), and 2 cases from the internal medicine clerkship's curriculum (SIMPLE). Case content also draws heavily from other projects in which STFM played a central role: the Family Medicine Curriculum Resources (FMCR) and the Future of Family Medicine. This virtual patient program helps each student learn core content in a convenient and stimulating way, and ensures full coverage of the required curriculum despite variations inherent in clinical rotations. Infused with the core values and attitudes of family medicine, fmCASES fosters self-directed and independent study, builds clinical problem-solving skills, and teaches an evidence-based and patient-centered approach to patient care.