Throughout the centuries, personality has been described and measured by a range of theories and models and it influences learning strategies and learning outcome. It is well known fact that the performance of students depends on various physical and psychological factors. There are significant differences between students with superior results and those with poor results, as concerns the personality traits. Thus, students with superior results have a strong character, have emotional balance, are hard-working, perseverant, serious, calm and self-assertive while students with poor school results are shy, fearsome, anxious, impulsive, indifferent, aggressive, emotionally unstable. Students’ academic results depend not only on intellectual aptitudes but also on a series of personality factors – scrupulosity, emotional sensitivity, self- assertion, common sense, expansive tendency. We can affirm that as regards the studied personality factors, the differences between the „good” and the „weak” students lie behind the manner in which they interpret the events they confront with.