Results of a study of the relation between the interest and the inclination for pedagogical activity are reported. It is shown that the inclination for pedagogical activity in school years does not play a major role in the appearance of the corresponding professional interest. The role of inclination as a factor in development of the professional interest significantly increases at the stage of higher education. After the graduation this role of inclination increases still further. A method for the diagnosis of the professional interest and inclination for pedagogical activity which, when somewhat modified, can be used for other vocations as well is presented.