The work points out the importance of the use of the information and communication technologies in education. The overview of elementary, advanced and specialized informatics and information related knowledge and skills that every teacher should master and apply in the educational process is presented. Stress is laid upon the importance of the application of modern aspects of communication by using computers in schools. The work features a model of introducing and creating the knowledge base of high quality necessary for the application and use of information and communication technologies in the educational process in the Republic of Croatia. (Contains 3 tables.) [This paper was published in: Rajkovic, V., ed. Proceedings of the 25th International Conference on Organizational Science Development (Maribor, Slovenija).]