This study explores how to improve the effectiveness and sustainability of multicultural mentoring by comparing the perceptions of college student mentors and institutional staff. Based on surveys and interviews at Daegu Catholic University, student mentors viewed multicultural children as equals and focused on academic support and building relationships. In contrast, institutional staff emphasized holistic care, including emotional, cultural, and career-related support, viewing the children as needing comprehensive assistance. Qualitative analysis showed student mentors favored relational approaches, while staff called for stronger programs and expanded mentor training. Despite these differences, both groups agreed on the need to improve matching systems, enhance pre-training and discussions, and strengthen the university’s central role in the system. These findings underline the importance of a university-led collaboration model to align stakeholder perspectives and support more effective and lasting mentoring practices.