How to Prepare for the Duolingo English Test (DET): A Complete Guide

The Duolingo English Test (DET) has become one of the most popular ways to prove your English level to universities and employers abroad. You take it from home on your own computer, it lasts about an hour, and results usually arrive within days — which makes it faster and cheaper than most traditional exams. But the format is unusual, and walking in unprepared is the easiest way to score below your real ability. This guide covers what's on the test, how scoring works, and a realistic four-week preparation plan.

What is the Duolingo English Test?

The DET is an online, adaptive English proficiency exam. Adaptive means the questions get harder or easier depending on how you answer — so no two test sessions are identical. It measures all four skills (reading, writing, listening, speaking), often inside the same question. Scores are reported on a scale from 10 to 160, and thousands of universities and institutions accept it as proof of English proficiency.

The main DET question types

Most first-time test-takers lose points not because their English is weak, but because a question format surprised them. Here are the types you should know before test day:

• Read and complete — a paragraph with damaged words; you fill in the missing letters.
• Read and select — decide which words on screen are real English words and which are invented.
• Listen and type — hear a sentence, type exactly what you heard.
• Read aloud — read a written sentence out loud clearly.
• Write about the photo — describe an image in writing within a time limit.
• Speak about the photo — describe an image out loud.
• Read, then write / speak — short essay and speaking responses to a prompt.
• Interactive reading and listening — longer, multi-step comprehension tasks.

How DET scoring works

Alongside your overall score (10–160), you receive subscores that combine skills in pairs: Literacy (reading + writing), Comprehension (reading + listening), Conversation (listening + speaking), and Production (writing + speaking). Universities often set both an overall minimum and subscore minimums, so check your target school's exact requirements — don't just aim for the overall number.

A 4-week DET study plan

1. Week 1 — Learn the format. Take one full-length practice test to find your baseline. Note which question types felt uncomfortable.
2. Week 2 — Attack your weak skills. If speaking is your gap, describe a photo out loud every day and record yourself. If writing is weak, write one timed paragraph daily and review your grammar mistakes.
3. Week 3 — Build speed. The DET is heavily timed. Redo the question types that felt rushed, and practise typing accurately — 'listen and type' punishes slow, careless typing.
4. Week 4 — Simulate test day. Two or three full practice sessions in a quiet room, on the computer you'll actually use, with the camera on. Check your internet, lighting, and that your face stays visible.

Common mistakes that lower your score

• Ignoring the rules — looking away from the screen, having another person in the room, or using headphones can invalidate your test entirely.
• Memorised answers — the scoring system penalises rehearsed, template responses in speaking and writing. Practise producing fresh language instead.
• Speaking too little — short answers give the examiner algorithm little evidence. Aim to fill most of the available time with connected sentences.
• Skipping the writing review — a 10-second re-read catches missing plurals, articles, and verb endings that quietly drain points.

How Learn With Empire helps you prepare

Our Duolingo English Test Prep course walks through every question type with guided practice and ends with a full mock exam, so the real test holds no surprises. You can also drill your speaking daily with Nova, our AI English tutor — create a free account to start practising today.