Level of educational achievement and screening tests for admission to higher education are strongly correlated with socioeconomic background and the type of school of the applicant, these situations would be a performance predictor for college freshmen students. Whereas the scores to be accepted into the medical career have a significant difference between the first and last selected, we wonder if there is a leveling factor that reduces the gap of origin. We analyze the performance in practical assessments and theory tests at the beginning and end of the academic year 2009 comparing the first and last selected according to the PSU score admission to medical studies at the Pontificia Universidad Catolica de Chile. Significant differences were observed in the performance of the first assessment of the theory of Anatomy and the final score obtained in the course, however, no significant differences in both the first practical test and practical final exam of the course. Our results suggest that the only evaluation level, which overcomes the differences of origin of the examined, are our practical tests; assessments in which the performance of the first and the last selected medical student is more homogenous. This type of practical assessments, performed on cadavers, primarily demanded experiences in our practical segment, standing by on the degree of skill or experience held by the students related to their educational institution of origin.