This study explored the relationship of service motivation and sense of belongingness in schools. This claim needs to be validated. However, this had never been explored specifically in the local setting. With this, the study determined the extent of service motivation of school heads and the sense of belongingness in schools of public secondary teachers in Panabo City Division. Also, it investigated the association of the involved variables and the domains of service motivation of school heads that significantly influenced sense of belongingness in schools. With the use of probability sampling, 150 secondary teachers in the public schools were selected as the respondents. Utilizing the descriptive-correlational survey method, the data collated were analyzed through the use of Mean, Product-Moment correlation and Regression Analysis. Results revealed that there was an extensive service motivation of school heads and an extensive sense of belongingness in schools. Furthermore, there was a significant relationship between the two variables. Moreover, all domains of service motivation of school heads were found to have significantly influenced the sense of belongingness in schools. Based on the findings, it was further suggested that higher officials in the Department of Education and school heads may identify means on how to help the school heads to be dedicated in public service to ensure sense of belongingness in the school.