Background: A squat is one of the exercises commonly applied in sport, in school physical education classes, among amateurs practising recreational sport as well as in rehabilitation of children and elderly people. The role of the preventive effect of the correctly performed squat on the musculo-skeletal system is particularly highlighted, while threats posed by an incorrect performance of the exercise are simultaneously indicated. The aim of the work was to define the knowledge of students concerning the methodology of teaching the correct squat and to present methodological fundamentals in this field. Material/Methods: The research involved 412 students of physical education and of a special course for personal trainers. The diagnostic poll method with the use of two techniques, i.e. a questionnaire and knowledge test, was applied. The collected data were analysed statistically with the use of the Excel packet. Results: Over a half of the students examined in the test admit that they do not know what the correct squat looks like. The subjects also indicate the lack of knowledge concerning the methodology of teaching it. Over 86% of the respondents admit that during classes included in the studies curriculum they had no opportunity to observe the methodology of teaching the squat. Simultaneously, nearly 71% of the students indicate that an incorrect performance of this exercise may bring about negative effects in the musculo-skeletal system of a person practising sport. Conclusions: The knowledge of students concerning the methodology of teaching the correct squat is insufficient.