Training in intimate partner violence (IPV) improves health professionals' knowledge and comfort regarding IPV; the optimal training frequency and format is unknown. The authors assessed how various types and amounts of IPV education for medical students affected knowledge and attitudes. Medical students at a large, urban university completed a survey concerning IPV-related knowledge and attitudes and participation in didactic and experiential IPV training activities. This was a one-time assessment. Of 586 students, 279 (48 percent) completed the survey. IPV-related knowledge increased with increased number of training activities. Knowledge and attitude scores were higher (p less than .001) for respondents with experiential, versus only didactic, activities. Abstract published by arrangement with Sage Journals.