Why Your IELTS Writing Is Stuck at 6.0 — 8 Reasons, and the Fix for Each
You opened your results and saw something like this: Listening 7.0, Reading 7.0, Speaking 6.5, Writing 6.0. You need 6.5. You've now taken the test twice, maybe three times, and the writing score has not moved.
The scorecard shape almost every retaker recognises
Bars are drawn to each band against a 9.0 scale.
Here is the frustrating part, and the useful part: a Band 6 essay is not a bad essay. It usually answers the question. It has paragraphs. A reader understands it from start to finish. Nothing in it is obviously broken — which is exactly why it's so hard to fix on your own. Nobody tells you what's missing, so you write another essay the same way and get the same score.
Band 6 essays fail in specific, repeatable ways. Below are the eight most common, grouped by the criterion each one damages. Read them looking for your habits, not all eight.
Task Response: the criterion that costs most people their 6.5
1You answer a question next to the one that was asked
This is the single most expensive mistake in IELTS Writing, and most people don't know they're making it.
The question asks whether advertising aimed at children should be banned. You write four excellent paragraphs about why junk food is unhealthy. Everything you wrote is true, well organised and relevant to the topic — but it does not answer the question. Task Response drops immediately, and no amount of good grammar rescues it.
Before you write anything, underline the actual instruction — to what extent do you agree, discuss both views and give your opinion, what problems does this cause and what solutions. Then write one sentence that answers it directly. If your essay does not defend that sentence, you are writing about the topic instead of answering the question.
2Your ideas are stated, not developed
Band 6 essays are full of sentences like this:
Governments should invest more in public transport because it reduces pollution. Also, it saves people money.
Two ideas, zero development. The examiner is asking a simple question as they read: has this idea been explained, or just asserted? Band 7 requires ideas that are extended and supported.
The three-sentence habit. State the idea, explain the mechanism, then show it in the real world.
One idea, three sentences
Governments should invest more in public transport because it reduces pollution. Also, it saves people money.
Governments should invest more in public transport because it reduces pollution.
When a reliable metro exists, commuters who would otherwise drive alone switch to it, which removes thousands of individual car journeys from the road every day.
Cities that have extended their metro networks in the last decade have seen measurable falls in roadside emissions as a result.
Switch between the two states: the claim is identical, and only one of them is credited as extended and supported.
Same idea. Three times the credit.
3Your position moves
You say you agree in the introduction. Your second body paragraph argues the other side sympathetically. Your conclusion says "both sides have good points." To a reader, your position is now unclear — and a clear position sustained throughout is a Band 7 requirement.
Decide how strongly you agree before you write, and check that every paragraph serves that position. Acknowledging the other side is fine and often good — but it must be followed by why it doesn't change your view.
Coherence & Cohesion: organisation you can see
4You use linking words as decoration
Many Band 6 essays open every paragraph with Firstly, Secondly, Moreover, In addition, and the writer believes this is what "cohesion" means. It isn't. Cohesion is measured by whether ideas connect — and mechanically bolted-on sequencers can actively cost you marks when they signal a relationship that isn't there.
The clearest example: writing On the other hand when nothing contrasts.
Delete every linker and read it again
Firstly, cities are becoming more crowded every year. Moreover, public transport in many of them has not been expanded since the 1990s. On the other hand, commuters have little choice but to drive. In addition, this adds thousands of cars to roads that were never designed for them.
Nothing but the linkers has been removed. The paragraph reads in the same order, and the false contrast in the third sentence disappears with it.
Delete every linking word from a paragraph, read it again, and put back only the ones whose absence made the meaning harder to follow. If a paragraph reads perfectly without them, it never needed them. We cover this in detail in Are You Overusing Linking Words?
5Your paragraph has two topics in it
A body paragraph that starts on education funding and ends on youth unemployment reads as unfocused, even when both points are good. Band 7 expects a clear central topic in each paragraph.
After writing a paragraph, say what it's about in one short phrase. If you need the word "and" to do it, split it.
Lexical Resource: accurate but plain
6Your vocabulary is correct — and completely ordinary
This is the most invisible Band 6 ceiling, because nothing is wrong. Sentences like there are a lot of problems in big cities and this is a very important issue contain no errors at all. They also contain no evidence of range, and range is what separates 6 from 7.
Stop hunting for "advanced words" to insert. Instead, take sentences you already wrote and make them more precise:
Precision, not difficulty
Every upgrade on the right uses ordinary words. None of them is a thesaurus substitution.
Precision reads as range. Thesaurus words used slightly wrong read as error — and cost you more than the plain word would have. More on this in Band 7 Vocabulary Isn't Fancy Words.
Grammatical Range & Accuracy: the misunderstood one
7Errors appear in almost every sentence
Not big errors. Articles, plurals, prepositions, subject–verb agreement — the small ones. The government should invest in the education. Many people prefers to work from home. Individually trivial; collectively they are the reason a mixed-structure essay stays at 6.
What matters here is density: what proportion of your sentences are completely error-free? At Band 6 the reader notices errors regularly. At Band 7 most sentences are clean, with errors persisting only occasionally.
Find your own top three repeat offenders (almost everyone has exactly three) and proofread for those specifically, one pass per error type. Generic re-reading catches almost nothing.
8Every sentence is the same shape
Subject, verb, object. Subject, verb, object. Fifteen times. It's accurate, and it's Band 6, because Grammatical Range is half the criterion name.
Fifteen sentences, one shape
Each block is one sentence: subject · verb · object. Indigo blocks carry a second clause.
Many students work part-time. This affects their studies.
Many students take on part-time jobs, which often affects the time they can give to their studies.
Combining does not add ideas. It changes the shape a reader sees, which is the half of the criterion most candidates never attempt.
Combine. Take two short adjacent sentences and join them into one complex sentence with a relative clause or a conditional.
You don't need many of these. You need enough that a reader sees you can do it.
What this actually means
Look back at the eight. Notice how few of them are about English ability. Most are about how you use the ability you already have: answering the question asked, developing rather than listing, keeping one topic per paragraph, choosing the precise word, proofreading for your own repeat errors.
That's genuinely good news — it means the gap between your 6.0 and the 6.5 you need is smaller than it feels. It's also why the score doesn't move by itself. You can only fix these things if you can see them in your own writing, and the exam gives you a number with no explanation attached.
That's the whole reason we built PrepForIELTS: write a Task 2 essay and get it marked against all four criteria, with every issue highlighted in your own sentences and an explanation of what it costs you.
Mark your first essay free
No card required.
Band scores discussed here refer to the public IELTS band descriptors. IELTS is a registered trademark of the British Council, IDP IELTS Australia and Cambridge University Press & Assessment. PrepForIELTS is not affiliated with, endorsed by, or approved by the owners of the IELTS trademark.