The manual presents a set of methods with which educational psychologists and primary school teachers will be able to quickly and effectively diagnose the readiness of fourth-graders to study in primary school. The diagnostic results will help teachers ensure continuity of education, organize psychological and pedagogical support for students during the transition from primary to secondary school, and provide the necessary information for developing individual educational routes for fifth-graders. Parents will be able to learn more about the opportunities, abilities, and interests of their children. All this will make it possible to create the educational and upbringing environment necessary for the development of the child’s personality, both at home and in extracurricular institutions of the additional education system. The manual is intended for educational psychologists and primary school teachers.