The Duolingo English Test (DET) is a modern, online English proficiency test designed to assess an individual’s language skills. It is an accessible and affordable alternative to traditional English tests like TOEFL and IELTS, with the added convenience of being conducted entirely online. The DET evaluates four core English skills: Reading, Writing, Listening, and Speaking. It uses adaptive testing technology, meaning the difficulty of questions adjusts based on the test-taker’s performance. The test lasts about 60 minutes, and results are available within 48 hours. Many universities worldwide, including those in the United States, now accept the DET for admissions.