The Duolingo English Test uses very strict security techniques, artificial intelligence (AI), and remote monitoring to keep the test experience secure and reliable. The Duolingo English Test contains tens of thousands of randomized questions and prompts that adapt to your skill level based on difficulty and correct response. ![]() The data supports the reliability and validity of the test’s structure, adaptability, and correlation to both TOEFL and IELTS scores. Reliable, Secure, Accepted, User-FriendlyĪ: YES.
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