Previous research by a knowledge institute TNO shows that in today's society it is becoming increasingly important to continue to learn lifelong proactively and based on personal responsibility. The iSelf measuring instrument was devised with this approach. The tool is especially suitable for students in groups 7 and 8 in Primary education and the first two classes in Secondary education. With this tool, in addition to the cognitive development of students, want to offer appropriate personalized support to students in strengthening self-directed learning and the associated social competences.