The Duolingo English Test is the world’s fastest-growing test of English proficiency, built on Duolingo’s experience teaching over 500 million users over 40 different languages. Today over 5,600+ educational institutions around the world, as well as governments, businesses and organizations rely on the DET for their highest-stakes decisions. Built on the latest assessment science, the DET allows test takers to demonstrate their English proficiency through a convenient, fast and affordable test. Since 2016, the DET has helped institutions grow and diversify the international student communities on their campuses.