This study aims to analyze (1) the implementation of clinical supervision in developing competence of citizenship education teachers in a democratic perspective in junior high schools of Bulagi district, Banggai Islands Regency, Province of Central Sulawesi; (2) the contributing factors to the competence of citizenship education teachers by clinical supervision program for the school principals; and (3) the efforts undertaken in developing the teachers’ competence. This study employs qualitative approach through case study. The data are generated from observation, interview, and documentation. The research comprises interactive data analysis to examine the data. The results show that (1) from the three phases of clinical supervision (the pre-observation meeting, observation of teaching process, and the evaluation), the effort of developing citizenship education teachers’ competence was not optimally implemented; (2) there are three factors (teachers’ educational background, teaching experience, and work ethic) which contributed to the non-optimal implementation of competence development of the teachers; (3) the school principals undertook stakeholder training, intensive lesson study, and classroom action research to improve the application of clinical supervision in developing competence of citizenship education teachers. It is for the teachers to achieve better competence.