Duolingo English Test - Format, Scoring & Preparation Guide

Duolingo English Test (DET)

Fast, Accessible, AI-Proctored English Certification for Higher Education Worldwide

1. What is the Duolingo English Test?

The Duolingo English Test (DET) is a modern, computer-adaptive English proficiency assessment designed for international students and job seekers. Taken online on-demand from any computer with a webcam and microphone, it offers an affordable and convenient alternative to traditional test center exams like IELTS or TOEFL iBT.

On-Demand & Fast Delivery: Take the 1-hour test anytime from home; official results are certified and delivered within 48 hours.
Global Institutional Acceptance: Recognized by over 5,000 universities, colleges, and higher education programs worldwide (including top US, UK, Canadian, and Australian institutions).
Integrated Computer-Adaptive Engine: Question difficulty adjusts dynamically in real time based on candidate accuracy.

2. Understand the Test Structure & Integrated Subscores

The DET takes approximately 1 hour to complete and consists of three main segments:

Test Setup (~5 Mins)

Onboarding and identity verification:

Government photo ID verification.
System check (camera, microphone, speaker, browser lock).
Review of test security and proctoring rules.

Adaptive Test (~45 Mins)

Computer-adaptive test tasks:

Read & Complete: Fill in missing letters in passage gaps.
Read Aloud: Speak written sentences into the microphone.
Visual Vocabulary: Identify real English words from text or audio.
Interactive Reading & Listening: Passage analysis and multi-turn conversations.

Speaking & Writing Sample (~10 Mins)

Open-ended evaluation (sent to universities):

Writing Sample: 3 to 5-minute extended writing on an academic topic.
Speaking Sample: 1 to 3-minute video response to an open-ended prompt.

3. DET Scoring System & Subscores (10 – 160 Scale)

Results are reported on a scale from 10 to 160 in 5-point increments, featuring four integrated subscores:

Literacy Ability to read and write.
Comprehension Ability to read and listen.
Conversation Ability to listen and speak.
Production Ability to write and speak.

Score Benchmarks & CEFR Equivalency:

120 – 160 Points (CEFR C1–C2) Advanced Fluency: Standard requirement for competitive university degree programs. (Equivalent to IELTS 7.0–8.5+ / TOEFL 95–120).
100 – 115 Points (CEFR B2) Upper-Intermediate: Minimum threshold for many undergraduate and foundation courses. (Equivalent to IELTS 6.0–6.5 / TOEFL 72–94).
60 – 95 Points (CEFR B1) Intermediate: Basic functional fluency.

Compare full conversions across all exams on our CEFR Level Converter.

4. Step-by-Step Preparation & Rules Strategy

Follow these essential steps to ensure your test is successfully certified without rule violations:

Phase 1: Environment & Security

Ensure a quiet, private room with no other people present
Maintain continuous eye contact with the screen (looking away invalidates the test)
Ensure ears and face remain completely visible throughout testing