Education is one of the most important tasks of any society, and the most important for the educational process are students, teachers and the teaching process itself. Evaluation implies assessment, evaluation and determination of values and is an important stage of the educational process. In accordance with the previously mentioned, the evaluation of teachers' work is extremely important because it greatly contributes to the quality of teaching, and thus to the society in which we live. It is necessary to evaluate the work of teachers, so that based on the results of the evaluation, it can be seen what needs to be improved in further work. When the evaluation of teachers' work appeared in the school system, it was initially perceived as a threat, but this changed over time and today evaluation is understood as a means of improvement. There are various types of evaluation, such as diagnostic, formative and final. One of the most important is self-evaluation, which involves a personal assessment of the quality of teachers' own work, and which serves to improve and advance one's own educational practice. This process is important for every teacher because it serves for improvement and progress. For the evaluation of teachers' work, the most important are the students themselves, then critical friends and fellow teachers.