Lan Thi Ngoc NguyenNga Thi Thanh TranHuyen Thi NguyenMinh Quang Le2022-11-192022-11-192021https://repository.vlu.edu.vn/handle/123456789/145410.2991/assehr.k.210226.026This study aims to investigate language proficiency and its determinants of Vietnamese students. Based on holistic literature, the authors examine and test the impact of five intrinsic factors related to the students’ characteristics (which are learning purpose, learning ability, learning method, hard-working, and self-awareness) and three extrinsic factors that are related to demographic factors, parental indicators, and schooling-environment on the language proficiency. Data was collected from online questionnaires sent to more than 2500 students from eight famous universities in Vietnam and converted into an excel version before translated into SPSS and EVIEW. Research results show that intrinsic factors, especially learning methods, play a vital role in shaping Vietnamese students’ capability to learn a second language. From educators’ perspectives, the higher level of English exposure the students are equipped at school, the higher their language proficiency. Finally, we compare the difference in learning language ability among genders and ages. The findings suggest that girls and minorities are less proficient in language than others.en-USLanguage proficiencystudent demographicsVietnamese students.proceedings-article