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Intense debate exists internationally on the study of school effectiveness. A variety of definitionshas been given on this issue along with research findings that try to enrich the theoreticalframework and specify its applications. Among the factors that play an important role in schooleffectiveness, the most important seems to be “students”, “teachers” and “the school principal”.The aim of this study, based mostly on teachers’ opinions and students' reports, is to investigatehow psychological and demographic variables are related with the school system effectiveness .In this research 1671 students and 204 teachers participated, derived from secondary schools inthe broader area of Athens . The specific measurements that were used as the schooleffectiveness indicators include students’ psychosocial adjustment and how much they perceivetheir school as a community that cares for pupils,as well as their school performance andparticipation in school programs, along with teachers’ emotional commitment and openness tochange, their involvement in activities beyond their educational duties and school administration.School effectiveness was revealed in terms of students’ answers that were associated withstudents’ psychosocial adjustment and teachers’ answers towards the perspective of supportiveand with vision management, linked to staffs’ openness to change and associated withperceptions of support, care, respect between parents-teachers and parents-students.

Σκοπός της παρούσας διατριβής είναι η έρευνα της διαδικασίας σχεδιασμού του Προγράμματος Σπουδών των Σχολείων Δεύτερης Ευκαιρίας, της φιλοσοφίας του και της εφαρμογής του στα πρώτα Σχολεία, κατά την πιλοτική και την πειραματική φάση λειτουργίας του προγράμματος. Επίσης, αντικείμενο της έρευνας αποτελεί ο τρόπος που ο θεσμός απέκτησε τα βασικά χαρακτηριστικά του στοιχεία και το κατά πόσον αυτά απαντούν στις ιδιαιτερότητες των ενήλικων εκπαιδευομένων και εναρμονίζονται με τη φιλοσοφία και τις βασικές αρχές της εκπαίδευσης ενηλίκων. Παράλληλα, διερευνώνται οι προϋποθέσεις που διευκόλυναν την όλη προσπάθεια, δηλαδή οι δικλείδες ασφαλείας που τέθηκαν για την επιτυχία του όλου εγχειρήματος και το κατά πόσον αυτές λειτουργούν ακόμα προς όφελος των Σχολείων Δεύτερης Ευκαιρίας.

Abstract. This paper presents the experimental procedure that has been followed, with main goal to develop various grout compositions adequate for strengthening stone masonry constructed with poor quality mortars. Nikolopoulou V., Adami C.-E., Vintzileou E., Palieraki V. injectability, fluidity, stability and penetrability. This research will lead to a number of suitable mixes that satisfy the performance criteria set for their design. The suitability of those mixes will then be checked by injecting them to the constructed wallettes.