This thesis focuses on the role of application problems in upper secondary school mathematics education, specifically within the context of grammar schools. Furthermore, it offers a collection of 51 original, solved application problems that will serve as the foundation for a forthcoming online database. In the first, theoretical part, we define core concepts, examine models of the application problem-solving process, explore their classifications based on various criteria, and finally, analyze the competencies that solving application problems has the potential to develop. The second part of the work discusses a questionnaire survey conducted among grammar school teachers in the Czech Republic and teachers at comparable types of schools in neighboring countries; it also presents an analysis of application problems found in the most frequently used mathematics textbooks for grammar schools. The third and central part of this thesis consists of the aforementioned collection of application problems designed for the database.