The Informatics became obligatory in all Lithuanian secondary schools (in 10th and 11th grade) more than ten years ago. The Informatics curriculum covers three main topics: information as a concept of information and principles of information transmission, logic as the basis for understanding the computer functioning, and algorithmization (programming). Since next school year the Informatics will be a compulsory course in the final years of the basic school (9th and 10th grade). Recently the Informatics syllabus of basic schools embraces four main topics: information, algorithms, computers, and information technology.
The paper deals with Informatics compulsory course: its purpose, goals and contents. Relations between theory and practise of Informatics are discussed. The main attention is paid to the analyses of the content of Informatics. Information, algorithms, computers, and information technology are exhaustively described. Some remarks on Informatics syllabus and standards are presented.

This work is licensed under a Creative Commons Attribution 4.0 International License.