How to prepare for the Duolingo English Test
Most preparation advice is a list of tips. This is a method: work out what is actually costing you points, then fix that specific thing.
- Find which of your four subscores is costing you most
- A planner that turns a target into a timeline
- AI-scored writing and speaking, with feedback on every response
There are two completely different reasons a DET score comes out lower than someone expected, and they need opposite responses.
The first is performance loss — your English is fine, but you left blanks empty, ran out of time, misread a prompt, or did not know how a task worked until you were in it. This is recoverable quickly, and a lot of it is recoverable in an afternoon.
The second is a genuine language gap. That takes months, and no amount of test technique substitutes for it.
Almost everyone assumes they have the second problem. A great many people have the first. The whole point of this page is to work out which one you have before you spend three months on the wrong one.
Diagnose before you study
The single most common preparation mistake is practising the thing you are already comfortable with. It feels productive, the scores look good, and it changes nothing — because your overall score is a mean, and means are dragged by their weakest member.
So the first useful action is not study. It is a full practice test, taken properly, to produce a report you can read.
Take one full mock under real conditions
One sitting, no pausing, no dictionary, no second attempts. A test you paused is a test that tells you about your English but not about your performance, and performance is half of what you are diagnosing.
Read the subscores, not the overall
The overall number tells you where you stand. The four individual subscores tell you what to do. A 105 built from 120/120/90/90 is a completely different problem from a 105 built from 105 across the board.
Find the gap between your best and worst skill
If the spread is twenty points or more, you have a weakest-skill problem and that is where all your time should go. If everything is within ten points, you have a general level problem, which is slower to move.
Read the per-response feedback
For writing and speaking, the score alone does not tell you what went wrong. Off-topic drift, thin development and grammatical range are different failures with different fixes, and only the feedback distinguishes them.
Write down the specific errors, not the score
Your error log is the actual study plan. "Writing 95" is not actionable. "I lose articles and I never finish the last sentence" is.
Which subscore is costing you the most
Because the overall score is the mean of the four individual subscores rounded to five, the arithmetic of improvement is unusually clear.
| If your subscores are | Overall | Raising the weakest by 20 gives | Raising all four by 5 gives |
|---|---|---|---|
| 120 / 120 / 90 / 90 | 105 | 115 (+10) | 110 (+5) |
| 115 / 105 / 105 / 125 | 115 | 120 (+5) | 120 (+5) |
| 110 / 110 / 105 / 110 | 110 | 115 (+5) | 115 (+5) |
Read the first row carefully. Two weak skills at 90 are costing that candidate ten points of overall score, and lifting one of them is worth more than a broad five-point improvement everywhere. Uneven profiles reward targeted work enormously.
What is recoverable quickly
These are performance losses, not language gaps. Every one of them is a habit, and habits change in days.
Do this
- Filling every box on Read & Complete. Partial credit is real; an empty blank is a guaranteed zero.
- Selecting only words you genuinely recognise on Read & Select, because accepting invented words counts against you.
- Typing your transcription before replaying on Listen & Type, while the sound is still in memory.
- Reserving the last forty seconds of the Writing Sample for proofreading. There is no spell-checker.
- Using a fixed structure for long spoken answers so you never run dry at ninety seconds.
- Testing your microphone and camera before the test rather than on the first speaking item.
Not this
- Clicking "real word" by default — the scoring is built specifically to punish it.
- Leaving blanks empty because you were not certain. Certainty is not the bar; a constrained guess is a real chance.
- Starting a sentence you cannot finish in the time left. Unfinished is the worst available outcome.
- Answering a prompt you would rather have been asked. Relevance gates the writing and speaking scores.
- Spending all three replays on one unclear word while the rest of the sentence fades.
- Writing to the buzzer, which guarantees you never catch your own typos.
If your practice reports show you consistently doing several of these, you have points available that cost nothing but attention. Fix them before you start a study programme — otherwise you will spend months improving your English and keep losing the same marks.
What genuinely takes time
Everything above is technique. The following are abilities, and they move on a scale of weeks to months. It is worth being honest with yourself about which of these you need, because the timeline follows from it.
Vocabulary breadth
Firm enough to survive a five-second judgement. Built by volume of reading, not by lists — freshly memorised words are exactly what produces false positives on the invented items.
Connected-speech perception
Hearing the articles, auxiliaries and grammatical endings that reduce almost to nothing in natural speech. This is what dictation exposes and gist comprehension hides.
Spoken fluency under load
Producing organised English for three minutes without a script. Trainable, but only by actually doing it for three minutes — practising two-minute answers does not prepare you for the collapse that happens after two.
Written accuracy
Most writers have four or five recurring errors — articles, prepositions, agreement, tense — that account for most of their lost accuracy. An error log finds them and they respond quickly once named.
Reading for structure
Recognising the argument of a text rather than its sentences. This is what Interactive Reading tests, and it is trained by summarising everything you read in one sentence.
Processing speed
Doing all of the above fast enough. The timers are the hidden difficulty of the DET, and untimed practice trains a skill the test never asks for.
Roughly how long is this going to take?
Set where you are and where you need to be. The arithmetic below is a rule of thumb, not a promise.
What a session that actually works looks like
The most common failure in DET preparation is taking mock after mock without reviewing any of them. It feels like work, it produces a satisfying number to track, and it teaches almost nothing — because the diagnosis is the valuable part, not the score.
A session that moves your score looks more like this:
- 0–10 min
Review the last session's errors
Not new material. Read your error log and re-do the specific items you got wrong. Repetition at spacing is what makes a correction stick.
- 10–30 min
Targeted work on your weakest task type
One task, drilled properly, with the timer on. This is the bulk of the session and it should be uncomfortable — if it feels easy you have chosen the wrong task.
- 30–45 min
One timed set of something else
Enough to keep the other skills warm and to stop your improvement being narrow. Rotate what this is.
- 45–60 min
Review and log
Go through what you just did and categorise every error. Not "I got six wrong" — "four were agreement, two were prepositions." The category is the syllabus for next time.
What to do about each subscore
If Reading is your weakest
The fastest diagnostic is to look at why you are losing marks on Read & Complete. Go through your wrong answers and label each one: agreement, tense, preposition, collocation, or genuinely unknown word. Most people find "unknown word" is the smallest pile by a distance, which means the fix is grammar rather than vocabulary. If it genuinely is vocabulary, that is a reading-volume problem and it is measured in months.
If Listening is your weakest
Transcribe short clips and compare against the real transcript, then categorise your misses as content words or function words. Almost everyone finds their errors are overwhelmingly articles, auxiliaries and grammatical endings — the acoustically weakest parts of the signal. That points at connected speech and grammar, not at "listening harder". Learn what happens to of the, want to and did you in normal speech; these reductions are systematic and learnable.
If Speaking is your weakest
Start with Speak About the Photo, because it hands you a fixed subject so the only variable is delivery — phrasing, stress and fluency. Ten minutes of describing a photo aloud daily, recorded and listened back to, changes it visibly in a few weeks. Then take that delivery into Interactive Speaking, where you also have to understand each question and generate the content on the spot.
If Writing is your weakest
This is the most commonly neglected skill and therefore frequently the largest easy gain on a report. Write to five minutes, then spend twenty minutes correcting what you produced — the correction pass is where the improvement happens, and writing more without correcting more just rehearses your existing errors. Keep an error log; almost everyone has a handful of recurring mistakes that account for most of their lost accuracy.
How people lose months
Do this
- Reviewing every practice test properly before taking the next one.
- Practising with the timer running from the very first session.
- Working on your weakest subscore even though it is the least enjoyable.
- Keeping a written error log and grouping errors by category.
- Reading and listening to English outside of test practice entirely.
Not this
- Taking mock after mock without analysing any of them.
- Practising untimed because it feels more thorough. It trains a skill the test never asks for.
- Drilling the task you are already best at because the scores look good.
- Memorising vocabulary lists in the week before a test — half-known words actively hurt on Read & Select.
- Preparing scripted answers, which rarely fit the prompt and cause the off-topic drift that caps scores hardest.
A checklist you can actually tick off
Saved in your browser, so it is still here when you come back.
Questions about preparing
Will my accent lower my Speaking score?
No. The speaking tasks are graded on how intelligible and fluent you are, not on which accent you have, so a strong regional accent that stays clear costs nothing. What does lose marks is mumbling, long hesitation and words the automatic transcriber cannot resolve, so practise speaking clearly at a steady pace rather than trying to sound like anyone in particular.
How do I prepare for the Interactive Speaking task?
Practise thinking aloud under time rather than rehearsing set answers, because the July 2025 Interactive Speaking task reacts to what you say and a memorised speech will not fit the prompt you get. Record yourself responding to a photo or a question with no script, then check three things: that you filled the time, stayed on the point, and did not stall — those are what the task rewards.
Does it matter whether I use American or British English?
The test accepts both, so neither variety scores higher on its own. What is worth doing is staying consistent within a single answer — writing colour in one line and color in the next reads as carelessness — so pick one and keep to it.
How long does it take to prepare for the Duolingo English Test?
It depends on the size of the gap and what is causing it. Closing ten points is often a matter of learning the task formats and fixing timing habits, which is days rather than weeks. Closing thirty or more usually means genuine language gain, and that is measured in months. Progress also slows sharply above about 130 — the same effort buys fewer points at the top of the scale.
Can I improve my DET score in a week?
You can improve your performance in a week, which is not the same as improving your English. Learning the eleven task formats, fixing the habits that lose marks — leaving blanks empty, clicking "real word" by default, not proofreading — and getting used to the timings will recover points you were losing to unfamiliarity. That is real, and it is bounded. Actual language gain does not happen on that timescale.
What is the fastest way to raise my score?
Find out which subscore is dragging your average and work there, rather than practising what you are already good at. Because the overall is a mean of four individual subscores, twenty points of weakness in one skill costs five points overall — and fixing that one skill is far cheaper than lifting all four. For most people the weak one is Writing or Speaking, because those are the skills that get least practice outside a classroom.
Are practice tests better than studying grammar?
They answer different questions. Practice tests tell you where you are losing marks; grammar study is one of the things that fixes it. Taking mock after mock without analysing the results is the most common way to spend a lot of time and not improve — the diagnosis is the valuable part, not the score.
How many practice tests should I take?
Enough to see a stable pattern rather than a single reading. Because any one score carries measurement error, two results five points apart tell you nothing; a consistent run tells you a lot. What matters more than the count is that you review each one properly before taking the next.
Should I memorise answers or templates?
Structures, yes. Scripts, no. A reusable shape for a spoken answer or an essay saves you the planning time you do not have. A memorised paragraph rarely fits the prompt you actually get, and forcing it produces the off-topic drift that caps the score hardest — relevance gates the writing and speaking rubrics.
Does reading in English help more than practice questions?
For the reading and vocabulary tasks, sustained reading is the underlying skill and practice questions only measure it. Read & Select in particular resists cramming, because freshly memorised words are half-known and half-known words are exactly what the invented items catch. Broad reading over weeks is what moves it.
What should I do the day before the test?
Very little that is new. Check your equipment — camera, microphone, a stable connection, a quiet room you can control — because technical problems on the day cost more than any last-minute revision would have gained. Beyond that, review your own error log rather than starting fresh material.
How many hours of study does the DET need?
It depends entirely on the size of your gap and whether it is technique or language. Learning the twelve formats and fixing habits is a handful of hours. Genuine language gain runs to dozens, and slows sharply above 130 where the same effort buys fewer points.
Is it better to study alone or with a tutor?
The diagnosis is what matters, not the company. A tutor is most valuable for writing and speaking, where you cannot reliably judge your own output — and least valuable for the objectively-marked reading tasks, where a report already tells you exactly what you got wrong.
Should I practise on a phone or a computer?
A computer, with a real keyboard. The official test is taken on a laptop or desktop, and several tasks are typing-heavy under tight timers. Practising on a phone trains a typing speed you will not have on the day.
What should I do straight after a practice test?
Review it before you take another. Categorise every error — agreement, preposition, unknown word, ran out of time — because the category is your actual syllabus. Taking mock after mock without reviewing any of them is the most common way to spend a lot of time and not improve.
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