Information and Communication Technologies (ICT) may be considered as a synonym for the modernization of all organizations, including school units, as they provide for advanced and updated technological tools and applications. Nowadays, the implementation of new technologies in the schools of secondary education in Greece has been rapidly increasing. This adoption of ICT reinforces the teaching process, but also facilitates administrative transactions. The current research aims to determine the level of technological infrastructure present in the secondary schools of Greece, to what extent this equipment meets their administrative needs, to study the role of the school libraries in their contribution to the modernization of school administration, and to examine the conditions that influence the implementation of ICT in school management.