Students' evaluations of teaching quality are one of the crucial components of the teaching quality evaluation (along with external evaluation, opinions of colleagues, etc.). According to our research and professional experience, the teaching quality has to be examined in correlation with personality traits of a lecturer. Students' surveys (aiming at evaluating the teaching quality) have to consider the most valuable factors of the teaching quality and qualities of lecturers, which comprise knowledge transfer, knowledge evaluation, accessibility of a lecturer and his/her personality traits. In order to obtain quality results and compare them among various universities, a unified questionnaire should be applied when exploring the students' evaluations of teaching quality. (Contains 2 tables and 2 footnotes.)