The article discusses the features of applying the criterion approach to assessing the functional literacy of schoolchildren in computer science, the possibility of developing tasks based on the works of the studied scientists. In accordance with the updated educational program, the system of tasks aimed at the development of functional literacy of schoolchildren involves solving problems specific to specific life situations. This problem is usually associated with a new personal life for schoolchildren, work, recreation, and social life. The problems posed in the framework of tasks require the student to be able to work with information; manage many types of interrelated and interdependent objects and phenomena; describe the features of developing ways to solve problems in a new context. The possibility of implementing a system of multi-level tasks in improving the effectiveness of the lesson by creating a system of tasks for assessing the functional literacy of students in the study of computer science is determined. The possibilities of assessment aimed at increasing the interest and motivation of students by drawing up life tasks to improve the functional literacy of students are considered.