The credit is the measurement of workload and it is established to be about 25 hours each.
Every teaching included in a study course is evaluated in credits. For example, a 6 credits course involves a workload of 150 hours, formed by 60 hours of teaching and 90 hours of individual studying.
Also other activities, such as final exam and internships, are defined in credits. The total amount of credits included in an academic year constitute the annual Plan of Study.
To obtain a Bachelor degree (first level), the student needs 180 credits.
After graduation, in order to obtain a Master degree (second level) the student needs 120 credits.