D.Litt. et Phil. / The fundamental axle of this work is the educational and ideological policy during the years 1833-1862 concerning the secondary education. That’s to say, it is attempted the research and presentation all those of factors that directly or indirectly are involved in the molding/shaping and organization of the secondary education during King’s Othon reign, something which is imprinted both on the educational speech, and on the particular school activity. Specifically, the related laws and circulars are presented and the significance or the possibilities of application are evaluated. Further more, the way of acceptance or their reaction to them is located. This also has a special meaning, because during this period the steady basis of secondary education of Greek nation is formed. This is proved by the way of the formation and organization to a great degree development of the school plant. Thinking so, the basic matters and work inquiries, which are mentioned to European lending and domestic needs, the educational uniformity, the legislative frame and thoughts, the United organization of the secondary main circle of the circular education, the school liturgy according to regions of the Greek country and the by chance particularities, the orientation of the religions professional education, the education of Greek women, teachers, school children, pedagogic instructive teaching and educational task. Documents as primary sources were developed and kept in the General files of state “mainly in Kapodistrias’ and king Othon’s files” in the historic and ethnological society of Greece, in private files and collections. At the same time, those days what was written in the press was searched and was seriously taken into account as well as the existing bibliography. Finally the work was structured into eleven parts. The first part is mentioned to the conceptual and historic frame and what is related to the educational operation as well as the school work analyzed there. The second part includes what there was in Greece before 1833, mainly in Kapodistrias’ government. In the next part (c) entitled “The institutional operation in the secondary Education” the laws, thoughts and philosophy, directions and articles are analyzed. The foundation and operation both of Greek schools and high schools are the contents of fourth part. In the fifth part there are the economic possibilities and resources of the Medium Education and explicit information is given for the financial grants, the housing school problem and the luck in supervisory material. The next part concerns the common inferior education of Greek girls and as a rule the limited possibilities that they had for attending the courses of secondary education. The syntax and development of the analytic programs of study as well as the teaching of lessons is the content of the seventh part. In the eighth part the synthesis of the instructive corpus, the conditions of nominated teachers, their salary, their duties and obligations are examined. It follows “9th part” a certain report to the extend of school potential, registration conditions of students in Greek schools and high schools, according to their geographical regions as well as their fathers’ and guardians’ social and occupational data. The teaching works, in general, studies, penalties, wages, examinations, progress, reactions etc, are evaluated in the tenth part. The work is completed by the account of discoveries and general conclusions.