The functioning of today's life rests on digital technologies. Discoveries, innovations and practial application that come with the use of digital technologies enable continuous improvement of business and transformation of business models. Nowadays, digital and information literacy have almost the same importance as basic literacy, while digital skills and mastery of various types of technology are among the most desirable qualities that make participants competent and advantageous in the labor market. Their significance is very high in the education sector, where digitalization and the idea of modern schooling are increasingly talked about and worked on. Although technology is a decisive factor in all of this, it is not enoguh by itself and is insignificant without people. This is precisely why it is important that the educational staff become familiar with its work and functionalities to effectively build a digital environment in which young people are brought up and developed. The need for digital reform is increasingly recognized in Europe, so the Croatian academic and research network, CARnet, launched a pilot project in 2015 called „e-Schools: Establishment of the system of digitally mature schools (pilot project)“ which is part of a wider e-School program and it introduced the service of e-Diary. Purpose of writing this master thesis is to research informatization of the Croatian education system and introduce the e-Diary application, the reasons for its introduction and research of opinions on its features. Teaching staff as a target group will be questioned about the use of the e-Diary application through a questionnaire. The goal is to discover respondents view of the e-Diary based on their sociodemographic characteristics, digital skills and exepriences and to determine the benefits of the implementation in system.