This article discusses the literacy criteria in the school textbook of PISA tasks for the formation of a functionally literate personality. In the course of teaching a chemistry lesson, it is necessary to expand theoretical knowledge and develop critical thinking skills in the process of increasing students' creative activities, activity of independent work, offering various PISA tasks. It was considered that the tasks for the development of functional literacy in students are insufficiently presented in the textbook. Functional skills begin to be formed and developed within the walls of the school from the lower grades. Therefore, in chemistry lessons, starting from grade 7-8, it is necessary to continue to direct functional qualities to activity, creative thinking and the ability to make decisions, to choose their own path.

The most effective ways to develop functional literacy through problem tasks, level tasks are considered.

This paper defines a list of skills that students can use in the formation of natural science literacy and assessment of the level of natural science literacy in chemistry in the PISA program.

In the study of chemistry within the natural sciences, there are still plans to include tasks aimed at functional literacy in order to form students ' interest in the subject, explain the knowledge gained in life and in everyday life. The text and independent tasks used are designed based on the educational goal and allow you to successfully implement the training. In order to provide high- quality education to the younger generation in accordance with the requirements of the time and have a high level of literacy, the main attention is paid to improving the level of organization of creative tasks and independent work.