The research sought to study how Total Quality Management (TQM) can affect Saudi school education, specifically focusing on the perception of secondary girls' school head teachers about the degree of application of TQM practices the level of focus on customers (students, parents, stakeholders). The sample consisted of a number of head teachers (totalling: 123 teachers in 123 schools) and a questionnaire as the instrument of data collection. The data were analysed by using the SPSS software using the frequencies means and standard deviations. The results have shown that there is a high degree of application of the TQM practices in Saudi schools and responses were affected by the qualification and experience of head teachers. It was also found that head teachers acknowledged the importance of applying the concept and practices of TQM and considered it as a useful tool that could contribute to the development of quality educational practices in the schools. The research has made important contributions to identifying the common patterns of perception of head teachers about the TQM practices. Finally, the study has also suggested ways that will facilitate the process of applying the concept and practices of TQM in Saudi schools and which will increase the standards of education; improve the quality of education process and increase customer satisfaction.