The purpose of this article was to identify the driving, accelerating, and inhibiting factors of students participation in physical education extracurricular activities of schools. To this end, the researcher referred to experts in the field of student sport and extracurricular programs and, through a deep interview, using purposeful sampling and snowball sampling technique, collected information from them. Then, data from interviews, articles, educational materials and guidelines, and related books and clips were collected through triangulation techniques, and coded and analyzed using thematic analysis method. The results of the code grouping suggested two main components and eight sub-components at the entrance level of the students into the extra-curricular programs. Accordingly, it can be stated that the driving and inhibiting factors of student participation in school's physical education extracurricular activities are students and educators, along with stimuli and inhibitors that play a central role and require special attention. Accelerators such as stakeholder cooperation, political context, sponsorship and incentive sources and financial resources are involved in accelerating the sport participation of students. This research can be used as an analytical tool for sports participation of students in school’s extracurricular activities in Iran in order to provide a logical and principal solution to the problems of this field of student sport.