摘要:A relevant field of research in teacher’s professional competence assessment is taking the factor of motivation into account, as this enables teachers to differentiate between, i. e. to be aware of the significance of the individual professional competences and their development through their assessment. This research supports the understanding of how important motivation is in the process of the (continual) development of a teacher’s professional competence, taking his/her perception of the importance of competences in the educational process into account. The emphasis of the current research lays on the perception of the assessment by the selected number of primary and secondary school teachers. The following is the range of teacher's motivation perception: 1) motivating, 2) discouraging, 3) unnecessary, and 4) unfair in the process of life-long development of their professional competences. The research aim is to find out the differences in the individual motivational degrees in mutual assessment (motivating, discouraging, unnecessary, unfair, and other) relating to professional competences and find out the differences between the perception of the importance of the respective professional competences in the motivational category. Seven hundred thirty respondents - primary and secondary school teachers from Slovakia – participated in the research. The results showed the difference between the perception of the importance of professional competences among teachers who consider assessment to be motivating, discouraging, unnecessary, or unfair concept. Motivation towards assessment supports student-oriented competences, educational process and self-development of the teacher.