An analytical, longitudinal, and prospective study was performed, with the use of a questionnaire and checklist to determine the level of knowledge and prior application in deliveries and the partograph, with 72 medical interns that went through rotation at the Obstetrics and Gynecology Department of the "Dos de Mayo" National Hospital in Lima, Peru, from January to December 2006. The same instrument was later applied half way through and at the end of the study. Statistical analysis used analysis of variance (ANOVA), and the calculations were performed with a 95% confidence interval. The results showed a significant increase in the level of knowledge on childbirth, the partograph, and application in the elaboration of the partograph (p<0.001). The study's importance lies in the fact that the majority of Peruvian physicians begin their professional practice in primary care services (far from medical centers with higher complexity), where they will have to perform deliveries. The program will also help them recognize the right moment to transfer the patient to a health center with higher complexity.