Success holds a special place in the modern world. It is treated as one of the most and commonly desired goods. The desire for success is also related to the educators. In the article the author indicates sources, symptoms and consequences of this specific culture of success. and refers to various theoretical approaches to education, including to the discussion on its purposefulness. In this context, the author points to the immeasurability of education and, consequently, to the causes of the difficulties in defining what is educational success. The author also specifies suggestions that allow educators to cope with this indelible difficulty in determining success in education and indicates the directions of self-education activities.