The Duolingo English Test (DET) is a standardized test of the English language designed to be internet-based rather than paper-based.

[1][2][3] It was developed by Duolingo in 2014 as Test Center[4] and grew in popularity and acceptance at universities during the COVID-19 pandemic.

[5][6][7] The test is used by around 5,500 university admissions offices, including Harvard, Stanford, MIT, and Yale.

[8][9] Ireland accepts the test as part of its student visa program.

The Duolingo English Test is scored on a scale of 10–160, with scores above 120 considering the test taker to be proficient in English.