Is systematic training worth the effort in a university education?

Over the last thirty years the number of students in higher education institutions has increased, which has brought number of problems. Many students attend universities because of various influences, not only to obtain the higher education. Students tend to be less interested and self-motivated to study and do not learn continuously. This paper presents an approach applied in Operating Systems course, specifically to show how the systematic preparation of students (which involves preparatory tests and programming homework assignments every week) influences their results in important tests of the course.