The PSU English Skills Test (PSU-EST) is a new set of English proficiency exams developed by Prince of Songkla University to be used as an Exit Exam, offering an additional option for students to assess their English language skills. This test is designed based on the CEFR (The Common European Framework of Reference for Languages), which is an international standard for language education. The test content is designed to cover a wide range of topics while maintaining consistency (parallel) in terms of difficulty level.