Morality comprises the most basic working field of philosophy togeth- er with existence, knowledge and aesthetics issues. Depending on the structur- al conditions of the time and the community it is examined, some of these top- ics came to the forefront and some others lost their effects. After the proclama- tion of the Republic, similar cases were observed in the Philosophy Course Books written to be taught at high schools. In these books, morality, metaphysics and aesthetics were adopted as the basic subjects. However, the approach to the topics were rather given in way that they were regarded as a natural science. It is likely to say that the positivism had an impact, which had a dominant per- spective at that time, on this attitude. Another impact was the secular and nationalistic point of view that represented the view of newly founded Republic. In this study, how the morality subjects were taught in the High School Philosophy Course Books written just after the proclamation of the Republic, and how the political structure of the time had an impact on this case were examined.