Duolingo is the most popular language-learning platform and the most downloaded education app in the world, with over 300 million users.

The Duolingo English Test is a modern language proficiency tool designed for today’s international students and institutions. It offers an English proficiency score, video interview, and writing sample, providing an accessible, efficient, and secure testing experience. The test is accepted by many prestigious universities and colleges globally, including education providers in the USA, UK, Australia, Canada, and New Zealand. Its acceptance rate has been growing steadily.

The Duolingo English Test measures English proficiency and reports scores on a scale of 10 to 160, in 5-point increments. Test results include an overall score, as well as sub-scores in Literacy, Conversation, Comprehension, and Production.

The overall score is not an average of the sub-scores; each of the sub-scores is estimated independently and is a weighted combination of the questions that contribute to it. Test result certificates include a "score range", which represents the Standard Error of Measurement (SEM)—indicating the range within which a test taker’s true score is likely to fall.

This test can be taken online at any time and from anywhere, and it can be completed in about 1 hour, with scores available within 2 days. Like other English language tests, the Duolingo English Test is valid for 2 years. The cost is is relatively affordable compared to other tests like IELTS, TOEFL, and PTE.