The aim of this study was to investigate and to present the establishment and operation of the elementary, girls' secondary schools and civil schools and other educational activities of the Sisters 'Adorers of the Blood of Christ' in Bosnia and Herzegovina from the 1880s to 1945. The Work is based on unpublished sources from two archives of the Adorers, other unpublished and published sources and the literature.The methodological work is divided in several sections: the introduction and the second section with review broader socio-historical context in which the Adorers came in Bosnia and Herzegovina, as well the history of the emergence of the community itself. The third section is divided on presentation of the foundation and operation of the schools run by the Adorers during period of time from 1880 to 1918, from 1918 to 1941 and from 1941 to 1945. In each one it was analysed socio-political context, state educational system and foundation and operation of each one of the eleven elementary and five of girls' secondary schools/civil schools. In the fourth section it is made the comparative analysis of curriculum of the schools run by the Adorers and the state ones and quantitive analysis of the students of the two schools run by the Adorers. This written work aims to contribute to better understanding of the position of the elementary and secondary schools of the Adorers and their contribution to the development of the modern primary and secondary education, the dissemination of culture and education in Bosnia and Herzegovina from 1880 to 1945