Duolingo English Test Mock Test
Measure practical English proficiency for academic admissions and professional opportunities.
About the DET exam
Overview of the Duolingo English Test (DET)
The Duolingo English Test (DET) is an internationally recognized, computer-adaptive English proficiency assessment developed by Duolingo. It is widely used by undergraduate and graduate admissions offices across the United States, Canada, the United Kingdom, and Australia as an alternative to legacy standardized language evaluations. Delivered entirely online on-demand via desktop or laptop computer, the DET leverages sophisticated artificial intelligence and computer-adaptive testing (CAT) algorithms to measure real-world English communication skills in approximately one hour.
Unlike traditional linear examinations, the DET continuously calibrates question difficulty to match the test taker's demonstrated language proficiency. Correct responses trigger increasingly complex prompts, while incorrect responses prompt more accessible items. This adaptive methodology yields a highly reliable, nuanced evaluation of a candidate's communicative competence in a fraction of the time required by paper-based or multi-hour testing regimes.
Test Structure and Core Syllabus
The DET evaluates four primary integrated skill areas: reading, writing, listening, and speaking. Instead of separating these competencies into disjointed silos, the exam integrates multiple modalities within realistic linguistic tasks. The exam consists of three segments: a five-minute setup and onboarding period, a 45-minute adaptive test session, and a 10-minute ungraded video interview and writing sample shared directly with receiving institutions.
Key syllabus areas include:
- Lexical Knowledge and Morphology: Tested via Read and Complete, where candidates fill in missing letters of partially omitted words in academic passages, demonstrating vocabulary depth, spelling accuracy, and morphosyntactic awareness.
- Vocabulary Recognition: Assessed through Read and Select, where candidates scan a list of English words and pseudo-words to distinguish authentic terminology from plausible non-words.
- Aural Discrimination and Transcription: Evaluated using Listen and Type, where test takers listen to spoken sentences delivered at natural native cadences and transcribe them verbatim using proper capitalization and punctuation.
- Spoken Fluency and Phonology: Measured via Read Aloud, requiring candidates to pronounce displayed written sentences clearly, assessing segmental accuracy, word stress, intonation, and rhythm.
- Image Description (Written and Spoken): Requires providing concise, detailed, and grammatically precise descriptions of photographic prompts within strict time limits.
- Interactive Reading: A multi-component section featuring five distinct tasks based on academic texts: Complete the Sentences, Complete the Passage, Highlight the Answer, Identify the Idea, and Title the Passage.
- Interactive Listening: Simulates university-level dialogues where candidates engage in conversational turn-taking, choose appropriate responses, and write a concise summary of the discourse.
- Extended Academic Production: Involves both spontaneous multi-minute speaking tasks and timed persuasive writing prompts assessing structural coherence, lexical variety, and complex syntactic usage.
Official Test Rules and Proctoring Guidelines
Because the DET is administered remotely at home, strict security and proctoring protocols are enforced via automated AI monitoring combined with human proctor review. Violating any testing regulation results in test invalidation without refund and potential permanent bans.
Candidates must observe the following conditions throughout the examination:
- Remain alone in a quiet, private, well-lit room with no background noise or conversation.
- Keep eyes directed toward the screen at all times; looking away, downward, or off-camera can trigger security flags.
- Leave ears and face unobstructed; headphones, earphones, beanies, or long hair covering ears are strictly prohibited.
- Do not use writing utensils, paper, notebooks, textbooks, dictionaries, or supplemental digital notes.
- Maintain a single computer monitor; dual screens, screen-mirroring programs, and secondary peripherals must be disabled.
- Prevent all background programs, browsers, spelling checkers, grammar extensions, and virtual machine software from running.
Scoring Methodology and Passing Standards
The DET reports an overall composite score on a scale of 10 to 160 in five-point increments. The score is aligned with the Common European Framework of Reference (CEFR) levels ranging from A1 to C2.
In addition to the composite score, candidates receive four integrated subscores designed to illustrate specific operational strengths:
- Literacy: Evaluates the candidate's combined ability to read and write.
- Comprehension: Evaluates the combined ability to listen and read.
- Conversation: Evaluates the combined ability to listen and speak.
- Production: Evaluates the combined ability to write and speak.
Passing scores are determined independently by receiving institutions rather than Duolingo. Generally, competitive US university admissions benchmarks require an overall score between 105 and 120 for undergraduate degree admissions (CEFR B2 to lower C1) and 120 to 135+ for competitive graduate programs (CEFR C1 to C2).
Strategic Preparation Tips for High Performance
Maximizing your DET score requires targeted linguistic practice alongside familiarization with computer-adaptive item formats:
- Train Typing Speed and Accuracy: Because written sections enforce strict timers (often 1 to 5 minutes), proficient keyboarding allows you to focus mental energy on vocabulary sophistication and structural cohesion.
- Expand Contextual Reading: Practice reading high-level journalism, academic essays, and scientific abstracts to intuitively grasp sentence cohesion, transitional markers, and lexical collocation for Read and Complete prompts.
- Practice Timed Speech Extemporaneously: Utilize practice prompts requiring one to three minutes of continuous speech without pauses or repetitive filler words. Focus on varied grammatical structures and precise topic-specific adjectives.
- Master the Interactive Listening Flow: Train note-free auditory memory. Concentrate on speakers' primary communicative intentions, stance shifts, and ultimate conclusions to quickly produce accurate summaries.
Test rules
- The test taker must sit alone in a private, quiet, and well-lit room for the entire duration.
- No external audio devices, headphones, earphones, or headsets of any kind are permitted.
- Face and ears must remain uncovered, clearly visible, and within the web camera frame at all times.
- Physical writing materials, paper, notebooks, textbooks, dictionaries, and mobile phones are banned.
- Only a single display monitor is allowed; all external displays and screen-sharing tools must be disconnected.
- Candidates must never look away from the computer screen during any testing or response interval.
Score grading
Scored on a holistic scale from 10 to 160 in 5-point increments based on a psychometric Rasch and Item Response Theory (IRT) model. Four integrated subscores (Literacy, Comprehension, Conversation, Production) are reported. Most US universities require scores between 105 and 130.
Syllabus & chapters covered
FAQs
Test takers typically receive their certified DET results within 48 hours of completing the test, although an expedited 12-hour result option is also available for an additional fee.
You may purchase and take as many tests as you like, but you can only purchase a test three times within any rolling 30-day period. Your official score certificate remains valid for two years from the test date.
No. The use of headphones, earbuds, AirPods, or any external audio headsets is strictly forbidden. You must use your computer's built-in speakers and microphone to hear audio prompts and record your voice.
The proctoring system tracks your gaze and face orientation. Looking away from the display, checking your keyboard excessively, or glancing toward doors or windows can flag your session for suspicious activity and lead to an uncertified result.
No. Scrap paper, pens, pencils, and physical note-taking materials are completely prohibited during the exam. Any attempt to write down questions or draft responses manually will result in immediate test invalidation.