This study examined how calling mediated the relationship between interpersonal problems and learning flow. Data was collected by surveying 312 high school students and analyzed using SPSS 25.0 and SPSS Macro 3.5. The results of this study are as follows. The first result was that interpersonal problems, calling, and learning flow were statistically significantly correlated. Interpersonal problems were negatively correlated with calling and learning flow while calling and learning flow were positively correlated. The second result was that calling mediated the relationship between interpersonal problems and learning flow. Learning flow was directly affected by interpersonal relationships and was indirectly affected by them through calling. This paper presents the implications of these findings and the limitations of this study.