This study aims to explore how cultural capital influences school social capital, and how both affects academic performance of students. This research employed path analysis to examine such influence through questionnaire data from the Taitung Education Panel Survey conducted in 2005 on eighth graders and their parents. The results obtained are as follows. (1) The more abundant the refined cultural capital becomes, the more the positive teacher-student relationship and the more the positive as well as negative peer relationship will be. (2) The more the positive teacher-student relationship becomes, the better the academic performance of the students will be. (3) The more disadvantageous hobbies students have, the less the positive teacher-student relationship and the more the negative teacher-student as well as peer relationships will be, and these lead to their poorer academic performance. (4) The more the disadvantageous leisure students engaged in, the less the positive teacher-student relationship, the more the negative teacher-student relationship, and the more the positive peer relationship will be, and these also lead to their poorer academic performance.