This article discusses one of the most relevant topics today. According to statistics, in 2023, the number of students who chose chemistry-biology as an elective was 19%, in 2022 - 17.5%. The article discusses the effectiveness, importance and expected results of conducting elective courses in chemistry for schoolchildren, including high school students. The program for updating the education system analyzes and describes the advantages of theory and practice in ensuring quality education for students with the correct use of modern technologies in elective courses. The role and place of elective courses in increasing interest in chemistry are determined. In the 21st century, a new paradigm of education is emerging, the essence of which is to shift the main emphasis from acquiring new knowledge to forming the need and ability of students to create the learning process on their own. Therefore, related issues were discussed. And the goal of general education in the current period of development in terms of the purpose, content, structure, methods and forms of education is to choose a free, humanistic orientation with multifunctional competence, which allows to independently solve various problems in everyday, professional and social life, and to develop personal intellectual strength. contains information necessary to form a person ready for action. In the research work, based on all the information, the 9th grade students conducted an experiment and conducted an elective course developed according to a special program. An elective course demonstrates an educational advantage by increasing the interest of students. By conducting an elective course for students, the reasons for the low level of knowledge and interests of students in chemistry were identified.