This study examines the language variation used by students in UIN Ar-Raniry's English Education Department, focusing on types of variations and their influencing factors. The data collection techniques used semi-structured interviews with four students from different academic years and observations of casual social gatherings of eight students. The findings reveal that jargon is primarily used in academic and religious settings, showcasing students' strong interest in their fields. In casual conversations, slang and colloquial expressions are common, reflecting social trends and cultural norms, while occasional swearing indicates strong emotions or a sense of camaraderie. Influencing factors include educational background, age, ethnicity, socioeconomic status, gender, and geography, all contributing to the dynamic nature of language use among students. This study underscores the importance of acknowledging and integrating linguistic diversity into educational curricula to enhance communication skills and cultural competence. It suggests that educators should adapt their teaching strategies to reflect this diversity, creating more inclusive learning environments. Future research should explore language variations in different educational contexts or among a broader range of student demographics to deepen understanding of linguistic diversity and its implications for education.