Every school, college and university has to deal with the scheduling task once or more times a year. The school schedule creation on its own is a very difficult task, furthermore, to make it convenient for students as well as for teachers makes it even more complex. The main aim of this paper is to present a flexible software system that is capable of creating a schedule for a secondary school using the latest technologies and distributed programming techniques. The literature analyzed in the paper is related to solving the tasks of school scheduling. Contemporary solutions are reviewed. The paper also contains analysis of existing commercial and non commercial solutions. The new software system is presented. Its advantages and disadvantages are analyzed. The optimization methods that can be used in school schedule optimization are analyzed and some of them are employed in the new software prototype in order to achieve better results. / Kiekviena mokykla arba universitetas kasmet susiduria su tvarkaraščio sudarymo problema. Tai yra labai sudėtinga bei daug laiko reikalaujanti užduotis. Šio darbo tikslas yra pristatyti lanksčią mokyklos tvarkaraščių sudarymo bei optimizavimo sistemą. Analizuojama literatūra, egzistuojantis komerciniai bei nekomerciniai sprendimai. Pristatoma nauja sistema. Analizuojami jos privalumai bei trukumai. Apžvelgiami optimizaciniai metodai kurie gali būti panaudoti mokyklos tvarkaraščiui pagerinti. Taip pat pristatoma nauja architektūra bei modelis.