The Duolingo English Test (DET) is a modern English proficiency exam built to expand global access to higher education. Test takers can take the DET online and on-demand, with certified results in 48 hours. The test combines the latest assessment science, AI, and rigorous security to give an accurate, secure measure of English ability. Its scores are accepted by thousands of universities and institutions in over 200 countries, and it costs a fraction of traditional English tests. Score reports include a video interview and writing sample, giving admissions teams a fuller picture of each applicant.