The main aim of the study is to study the perception of teachers towards service quality of private schools and the perception of teachers towards organizational commitment regarding the service quality of private schools. This study employed a survey research design. In the present study, the teachers of private schools are the target population. The private schools have faced stiff competition from their rivalries, and they are taking several measures to attract the students as well as the standard of education. So, the researcher has chosen private schools for the present study. It involved the collection of information from a sample of 150 teachers in Tenkasi district. To fulfill the research objectives, the qualitative data collected from the teachers of private schools have been analyzed with the help of SPSS. Questionnaires were distributed after making personal visits to the private school campuses. The teachers selected at a randomly selected time point were given the questionnaire. A total of 150 completely filled up questionnaire was collected during the period of data collection. It is found that availability of resources for new creativities and identification of Institution‘s objectives & policies are the important perception towards service quality of private schools among the respondents who are in the age group of 25 to 35 years and online / digital resources and administrative and support services are the important perception towards service quality of private schools among the respondents who belong to the age group between 36-45 years.