The standardized English proficiency assessment has yielded significant and positive impacts on the English teaching and learning processes at Tan Trao University. This assessment not only serves as a tool to evaluate students' English proficiency but also constitutes an integral component of the educational process, encompassing curriculum design and instructional methodologies. One of the paramount effects of this assessment is the establishment of clear standards regarding proficiency levels and requisite skills. This initiative provides educators and students with a precise understanding of the competencies required for English language acquisition. Consequently, the university can devise tailored language programs that ensure students are equipped with the necessary skills to thrive in academic and professional environments. Furthermore, the assessment instills a sense of pressure on students as they prepare and engage in a high-stakes testing environment. However, this pressure serves as a motivator for students to enhance their individual English proficiency. Consequently, students are propelled towards autonomy and responsibility in their English language learning endeavors, whether through supplemental coursework or independent study. the assessment fosters improvements in the quality of English language instruction at the university. Educators must possess comprehensive knowledge of the assessment's content and requisite skills, prompting them to explore and implement effective pedagogical strategies. This results in a diversification of teaching methodologies, ranging from the utilization of extensive learning resources to the organization of practical activities and classroom discussions.