This study intends to explore the function of vertical and horizontal aspects of social
capital that college students accumulate within the campus, particularly related to students’
academic behavior longitudinally. In addition, the function of social capital as norms is
examined empirically using a nationally representative data set to contribute the
development of the theory. The 7th and 8th year data from the Korean Educational
Longitudinal Study 2005(KELS 2005) is analyzed adopting Latent Growth Curve Model
utilizing AMOS 18.0 program. The result shows that college students’ academic
misbehavior has individual differences and the differences sustain longitudinally. The social
capital that college students accumulate in the freshmen year has meaningful effect on the
level of their academic misbehaviors. The vertical aspect of the social capital, which is the
relationship between students and faculty members, has positive effect, whereas the
horizontal aspect of social capital, which is the relationship among students, has negative
effect. The result of this study suggests the importance of facilitating rich relationship
between students and faculty members in the early year of college, and improving the
quality of relationships among students.