The present study aims to investigate the effect of immediate feedback on long-term blood pressure measurement skills. This is a randomized controlled trial including first year students from a Brazilian medical school, which will be randomized in two groups: an intervention group (submitted to a training on blood pressure measurement skills and an immediate feedback) and a control group (submitted to a training on blood pressure measurement skills, but with no immediate feedback). Then, students will be assessed 3 months after the feedback in order to see whether there will be a difference between groups. Our hypothesis is that students submitted to immediate feedback would have better scores in the blood-pressure measurement skills after 3 months. A knowledge questionnaire as well as a standardized patient scenario will be used to assess students' knowledge and skills.