Following the French Language Teachers Post-graduate Program of the Hellenic Open University a considerable number of dissertations has been completed thus involving an equivalent number of supervisors. The dissimilarities of the completed dissertations seem to depend on the students' abilities and the tactics of the supervisors. This announcement aims at investigating into the established practices and process followed by both, supervisors and students, during the writing of the dissertation. The investigation was based on questionnaires and interviews addressed to students, graduates and supervisors. The results of this research are focused on the points that have received the strongest criticism by both, supervisors and students. These points divert from the mediation and evolutionary guidance during the dissertation writing (Feuerstein, Vygotsky, Bruner).