The level of students coming to the University of Žilina is very different. There are significant differences in the level of knowledge from secondary schools, in the way of study, in the approach to the responsibilities and, last but not least, in the pursuit of new knowledge. Many students have difficulties integrating fully into the study process and are having problems to master the study of the first year. Therefore, research was conducted to find out what is the big difference between students, which is affecting their achievements. The article describes the results of the research done at the Faculty of Operation and Economics of Transport and Communications of the University of Žilina. There were several research objectives. The first goal was to find out the impact of the type of secondary school on the results of the study at the university from the subjects of Informatics in both semesters. The second objective was to find out how the number of hours in the subject of informatics weekly attended at secondary school affects the grade from Informatics at the faculty. The third goal was to compare study results in both semesters. To obtain the results was used the One-Factor Variance Analysis Method, T-Test for Two-Sample Assuming Unequal Variances, t-Test Paired Two Sample for Means. The research showed that the type of secondary school influences the study results in both semesters. Another interesting fact was that students who had a lot of informatics in secondary school do not achieve better results than those who have much less of Informatics. The results of the 2nd semester show that some of the students have adapted to the situation, improved their learning outcomes and were able to move further to the next years.