The course categories are as follows:

• Courses form a: The project has made recording and uniformly description (with metadata) all courses in the curricula of TEI of Western Macedonia and the Higher Ecclesiastical Academy of Thessaloniki in open platform eclass.
• Type A Lesson-: All elements of the course type a and open supportive material per section (formally, are notes or slides per lecture)
• Course Type A : All elements of the course type b plus open multimedia material per lecture which typically includes videotaped lectures or deliver on slides and video experiments and presentations covering at least the 80% standard deliveries of the course and exercises.