The study was conducted at Thai Nguyen University of Agriculture and Forestry, Academic year 2019-2020. Descriptive research design was used in the study. Mean, standard deviation and linear regression analysis were statistical tools employed in finding the mean level of the determinants of good Oral Communication of Advanced program (AP) students in terms of exposure to English language, grammar and vocabulary, mastery, passion in English and self-confidence; the mean level of students’ Classroom Oral Presentation performance in terms of diction, delivery, intonation, pronunciation and voice projection; and the significant effect of exposure to English language, grammar and vocabulary, mastery, passion in English and self-confidence to students’ classroom oral presentation performance. |