In Japan, changes in the environment surrounding school education include the recent mass retirement and hiring of teachers. In the past, young teachers have been able to improve their qualifications and abilities by passing on their knowledge and skills from older, more experienced teachers to younger, less experienced teachers in the practice of school education, but it has been pointed out that this transfer is not functioning well due to changes in the age balance. According to the "Interim Summary of the Training, Recruitment, and Training of Teachers for 'Japanese-Style School Education'" [1], "Teachers, as highly qualified professionals, are expected to Teachers, as highly qualified professionals, are deeply aware of their noble mission, and are obligated to strive to fulfill their professional responsibilities through continuous study and training.In this paper, we examined what elements are necessary for a group of teachers who continue to learn by themselves by analyzing the efforts of core science teachers (CSTs) in Kochi Prefecture. As a result, four elements (understanding of management, autonomy of CSTs, content of training, and networking of CSTs) were extracted as keywords.