This study investigated the key determinants of Chinese students' academic success indicated by their first semester GPA and credit hours earned in Korean universities. The determinants include demographics, prior achievement, academic self-efficacy, and Korean and English language proficiency. Questionnaires were issued and collected from 138 undergraduate and 63 graduate Chinese students studying in 27 different Korean universities. The findings of this study suggest that the Test of Proficiency in Korean (TOPIK) has a significant small to medium predictive effect on academic success and...