Abstract
School extracurricular activities (hereafter referred to as Athletic club activities) are places where students practice what they have learned at school. These activities can also provide learning opportunities for teachers to reflect on the outcomes of their educational practices, such as subject instruction and classroom management. This study aims to clarify the relationship between teachers’ learning and their experience in athletic club activities as advisors. Previously, being an advisor in an athletic club activity was associated with a negative connotation for teachers, particularly when they lacked experience. Nevertheless, the results of a questionnaire survey of current advisors at public junior high schools suggested that the experience is likely to positively change their views about teaching and students. Furthermore, it was found that teachers’ acceptance of athletic club activities as an opportunity for their own learning is strongly influenced by their individual beliefs and attitudes.