Is the Duolingo English Test Proctored?
Yes — but not in the way most people expect. There is no live human watching your screen in real time. Instead, the DET uses what Duolingo calls "proctoring plus": your entire session is recorded, then reviewed asynchronously by AI detection systems followed by at least one trained human proctor who watches the recording before issuing or withholding certification.
This approach is actually more thorough than traditional test centers. A single proctor in a room can only watch one person at a time and can be pressured or bribed. DET proctors are anonymous to each other and to you, review your session independently, and have access to the full recording — which they can pause, rewind, and slow down to examine flagged events in detail.
What Duolingo's Proctoring System Actually Monitors
The secure browser records six data streams simultaneously from the moment you start the test to the moment you submit:
| What's Monitored | What the System Is Looking For | What Gets Flagged |
|---|---|---|
| Primary webcam (face) | Face centrality, presence, and gaze direction | Eyes off-screen for sustained periods; face leaving frame; poor lighting hiding your face |
| Secondary camera (room view) | Full room environment — desk, surroundings, who else is present | Other people visible; notes or phones on desk; unauthorized materials in frame |
| Microphone audio | Ambient noise analysis for human speech frequencies | External voices, whispers, someone talking in the background, audio coaching |
| Keystroke and typing rhythm | Typing speed, pauses, paste events, and input patterns | Copy-paste shortcuts (blocked entirely); burst typing after long pauses; unnatural input rhythm suggesting external dictation |
| Screen and process scan | Active applications, browser tabs, running software | Remote desktop tools (TeamViewer, AnyDesk), screen sharing, additional browsers, AI assistants |
| Response pattern analysis | AI-generated text detection, template matching across sessions | Memorized/rehearsed speaking responses; writing that matches AI patterns or shared templates; identical responses across multiple test-takers |
Gaze Tracking: The Rule Most People Accidentally Break
The most common reason for an invalidation is not intentional cheating — it's looking away from the screen while thinking. The AI logs every second your eyes leave the monitor. Sustained off-screen gazes (typically a few seconds) are flagged automatically and reviewed by a human proctor.
The human proctor's job at this point is to determine context: did the test-taker look away to consult notes, or did they naturally glance to the side while formulating a thought? Minor, brief eye movements are usually cleared. Repeated, sustained off-screen gaze — especially during writing or speaking tasks — is what results in a "Not Certified" decision.
What to do instead: When you need to think, keep your eyes on the screen or look slightly upward toward the top of the monitor. Do not look to the side or down at your desk. Practice this habit deliberately before your test date — it feels unnatural at first but becomes automatic after a few mock sessions.
The Secondary Camera Requirement (2026)
Since 2023, Duolingo has required a secondary camera — typically a smartphone — positioned to show your testing environment from the side or behind. This is in addition to your laptop's built-in webcam.
The secondary camera captures what your primary webcam cannot: whether there is anyone else in the room, whether you have notes or a second screen nearby, and whether your testing environment is genuinely private. Common mistakes that lead to invalidation via the secondary camera:
- Phone positioned too close — proctors can see your screen in the reflection
- Phone not showing the full desk area — incomplete view of the testing space
- Phone's microphone picking up echo from another device playing audio
- Phone screen on, visible in frame, with notifications or apps visible
- Another person entering the room during the test, even briefly
Set your phone to Do Not Disturb before starting, empty your Favorites list (contacts who can bypass DND), and position the phone so it captures your desk, hands, and the room behind you without your test screen appearing in the shot.
How AI Detects Cheating You Think Is Invisible
Several tactics that test-takers assume are undetectable are in fact exactly what the system is trained to catch:
- Copy-paste is blocked at the browser level. The secure test application disables clipboard functions entirely. Any attempt to paste text is logged as a security event regardless of what was being pasted.
- AI-generated writing is flagged. The DET's scoring models are trained to identify patterns associated with large language models — even when responses are manually retyped rather than pasted. Unnaturally uniform sentence structure, absence of typical human errors, and lexical patterns that match AI output are all detectable signals.
- Rehearsed speaking responses are flagged. If your spoken response sounds memorized — fluent recitation without natural hesitation, self-correction, or spontaneous reaction to the prompt — proctors are trained to flag it. The rule is explicit: your speaking response must be given naturally at the time of the test.
- Identical responses across sessions are detected. If multiple test-takers from the same region submit near-identical answers, the system flags all sessions for review. Shared answer templates circulating in prep communities are known to the DET team and matched against submissions.
- Proxy test-takers are identified via ID verification. Before the test begins, you complete a live ID check — your face is compared to your government-issued ID using facial recognition. A proxy taking the test in your place will fail this verification step.
What Happens When You're Caught: The Consequence Tiers
Duolingo applies consequences in proportion to the severity of the violation:
| Violation Type | Consequence | Can You Retake? |
|---|---|---|
| Minor rule violation (e.g., looking away briefly, lighting issue) | Score not certified; attempt counted against your credit | Yes — retake within 21 days if attempts remain on credit |
| Moderate violation (e.g., external voice detected, unallowed materials visible) | Score invalidated; credit may be consumed | Yes — eligible to appeal within 72 hours, or purchase new credit |
| Pattern of violations (2+ broken-rule tests within 365 days) | Account suspended for 1 year from date of first violation; remaining credits expire | No — must wait out the suspension |
| Serious violation (e.g., proxy test-taker, deliberate identity fraud) | Permanent account ban; all credits expire; certified scores already shared remain visible but no new sharing allowed | No — permanent ban, eligible to appeal once |
If you have a 1-year suspension or permanent ban, you can still appeal once. Appeals are reviewed by a proctoring supervisor — not the original proctor — within 4 business days. All appeal decisions are final.
The Full List of Reasons Duolingo Will Not Certify Your Score
These are the official reasons listed by Duolingo in invalidation notices:
- You looked away from the screen for an extended period
- Your camera did not work during the test
- Your face was not always visible — testing area was too dark
- Duolingo could not verify the security of your testing environment
- Your microphone did not work during the test
- The test was not completed and uploaded
- The testing area was not always private (someone else entered)
- Outside materials or software were present during the test
- You spoke very little during the graded speaking section
- Your speaking response appears to have been rehearsed or written out in advance
- Your microphone volume was too low to grade your speaking correctly
- Your ID was invalid or did not match your profile
Note: an invalid ID is the only reason that does not require a full retake. If ID was the only issue, resubmitting a valid ID resolves it without sitting the test again.
Accidental Violations: The Most Common Innocent Mistakes
Most invalidations are not the result of deliberate cheating. These are the situations that catch honest test-takers off guard:
- Thinking out loud at a whisper — any audible sound during speaking tasks beyond your response is flagged as potential external coaching. Speak clearly and only when the prompt requires it.
- Poor lighting — if your face isn't clearly visible, the system cannot verify your identity throughout the session. Use a desk lamp facing you directly, not a window behind you.
- Phone notification sounds — even one notification ping during a speaking task creates an audio flag. Full Do Not Disturb, no exceptions.
- Looking at your keyboard while typing — glancing down repeatedly while writing triggers gaze flags. Practice touch-typing so you can keep your eyes on the screen.
- Someone opening the door — even a person briefly appearing in the background counts as "testing area not always private." Lock the door and put a sign on it before you start.
Before Your Test: The 10-Point Compliance Checklist
- Room is locked and you've told everyone in the building not to knock or enter
- Desk is completely clear — no pens, notebooks, phones, earphones, or papers
- Laptop webcam is positioned at eye level so your full face is always visible
- Secondary (smartphone) camera is set up to show desk + room behind you
- Smartphone is in Do Not Disturb mode with Favorites list emptied
- Lighting source is in front of you — no backlight from windows
- All other applications are closed; only the DET secure browser is running
- Microphone is tested and volume is set to clearly capture normal speaking voice
- Internet connection is stable — run a speed test before starting
- You've practiced keeping your eyes on the screen while thinking — not looking sideways or down
Frequently Asked Questions: DET Cheating and Proctoring
Is the Duolingo English Test proctored?
Yes. Every session is recorded via webcam, microphone, keyboard, and mouse. AI systems analyze the recording first, then at least one trained human proctor reviews the session before your score is certified or withheld. There is no live monitoring during the test — review happens after you submit.
Can you cheat on the Duolingo English Test?
Practically speaking, no. The combination of gaze tracking, secondary camera, audio monitoring, typing rhythm analysis, AI-generated content detection, and human review makes virtually every attempted cheating method detectable. Consequences range from score invalidation to a permanent account ban.
What happens if you look away during the Duolingo test?
The AI logs every off-screen gaze. Brief, natural glances are usually cleared by the human proctor. Sustained, repeated off-screen looks — especially during speaking or writing tasks — result in a "Not Certified" decision. Keep your eyes on the screen or directed slightly upward when thinking.
Does Duolingo detect if you use ChatGPT or AI tools?
Yes. The DET's scoring models are trained to flag writing patterns associated with AI-generated text, even when manually retyped. Unusually uniform structure, absence of natural errors, and phrasing that matches LLM output patterns are all detectable. The system also flags speaking responses that sound memorized rather than spontaneously produced.
What is "External Voice Detected" on Duolingo?
"External Voice Detected" means the microphone picked up human speech that wasn't your test response — someone talking in the background, a TV or video playing, or audio coaching from another person. This results in score invalidation. Test in a completely silent room with the door locked.
Does Duolingo use eye tracking?
Yes. The webcam feed is analyzed to track where your eyes are directed throughout the session. The system monitors for sustained off-screen gaze, which can indicate consulting external notes or receiving assistance. Human proctors review flagged gaze events in context before making a certification decision.
What is the secondary camera rule on the DET?
Duolingo requires a secondary camera — typically a smartphone — positioned to show your testing environment from the side or behind. It must remain active and recording throughout the test. The secondary camera allows proctors to verify that your desk is clear, no one else is in the room, and your environment is genuinely private.
Can Duolingo ban you permanently for cheating?
Yes. Serious violations — such as having someone else take the test for you — result in a permanent account ban. All test credits expire immediately. You can appeal once; if denied, the ban is final. A pattern of violations (two or more broken-rule tests within 365 days) results in a 1-year suspension rather than a permanent ban.
What is the difference between a minor and serious DET violation?
Minor violations (brief off-screen looks, lighting issues) typically result in a not-certified result with the option to retake using remaining credit. Serious violations (proxy test-taker, deliberate identity fraud, having another person assist you during the test) result in immediate account suspension or permanent ban with no refund of credits.