IELTS Writing
Why IELTS students plateau at band 6 (and what to teach instead)
By the IELTS Laboratory team. Published 22 October 2026. Updated 22 October 2026.
Short answer: Many IELTS writers stall around band 6 because more practice essays repeat the same habits. What usually holds them back is a small set of recurring problems, often undeveloped ideas, linkers used mechanically and a few grammar patterns that keep coming back. Find each learner’s top recurring problems, teach them directly, and check every new essay for those same problems.
“I’ve written twenty essays and I’m still a 6.” Most IELTS teachers hear this. The learner is working hard, but the extra essays are not changing anything, because nobody is tracking what keeps going wrong.
This article looks at why the plateau happens, what the public descriptors suggest about it, and a four-week approach you can use with a stuck learner. No method can guarantee a band, but this one gives the learner a clear target each week.
Why do IELTS students get stuck at band 6?
Because they repeat the same mistakes in every essay, and general practice does not target them.
Fossilised errors: a grammar pattern that has been wrong for years and feels right to the learner.
Breadth over depth: many ideas mentioned, none fully explained.
Mechanical linking: linkers at the start of every sentence, sometimes with the wrong meaning.
Memorised language: phrases that do not quite fit the question.
Feedback overload: twenty corrections per essay, so none gets fixed.
What separates band 6 and band 7 writing in the descriptors?
The public band descriptors (the criteria examiners use) describe band 7 writing as more fully developed, more flexibly organised and more consistently accurate than band 6.
The descriptors are published by the IELTS partners, and teachers should read them directly. In broad terms, the differences teachers notice most are:
Criterion | Typical band 6 pattern in class | What to work on |
|---|---|---|
Task Response | Position present but ideas not always extended | Develop each main idea with explanation and example |
Coherence and Cohesion | Linking is clear but can be mechanical | Use linkers by meaning; fewer and more accurate |
Lexical Resource | Some less common words, with errors in choice or collocation | Fewer “impressive” words, used accurately |
Grammatical Range and Accuracy | A mix of complex structures with frequent errors | Fix the two or three patterns that recur |
This is a teaching summary, not the official wording. It is not a scoring tool.
What should you teach instead of more practice essays?
Each learner’s own top recurring problems, ranked by damage, with a check on every new essay.
Damage is how much a mistake gets in the way of the reader. We use three levels: blocking (the reader has to stop or guess), limiting (wrong but understood) and cosmetic (most readers would not notice). A band 6 writer usually has one or two blocking or limiting problems that appear in essay after essay. Those are the target.
What does a four-week plan for a stuck learner look like?
One diagnostic, then three weeks each focused on the learner’s own top problem, with an essay at the end of each week.
Week | Focus | What the learner does |
|---|---|---|
1 | Diagnose | Look back over the last three essays; list every repeated problem with their own sentences |
2 | Problem 1 (often development) | Explain-example-link drills on their own paragraphs; one new essay |
3 | Problem 2 (often a grammar pattern) | Find-and-fix on their own sentences; one new essay checked for problems 1 and 2 |
4 | Review | Week-later review of every item they got wrong; one timed essay |
Keep the list short. Two or three target problems is plenty for a month.
How do you teach idea development?
Use a three-move pattern: make the point, explain it, then give a specific example and link it back to the position.
Activity: one claim, three moves (15 minutes). Take one undeveloped paragraph from the learner’s essay (anonymised if in a group). Choose one claim only. The learner adds a sentence explaining why it is true, a sentence with a specific example, and a sentence linking back to their position. Then they cut the other claims from that paragraph.
Invented example: “Public transport reduces pollution. This is because one bus can replace dozens of cars at peak times. In many European cities, bus lanes have encouraged commuters to leave the car at home. For this reason, investing in buses supports both cleaner air and the government’s wider aims.“
How do you break fossilised grammar errors?
Make the learner notice the pattern in their own writing, practise only that pattern, and check for it every time.
Show three of the learner’s own sentences with the same error, side by side.
Ask them to state the pattern in their own words.
Give ten short items on just that pattern.
Have them rewrite their own sentences.
Check the next essay for that one pattern before anything else.
This is the same notice-practise-personalise cycle in our pillar guide, Create IELTS lesson plans from the learners’ own mistakes. For whole-class versions, see Common IELTS writing mistakes and How to teach coherence and cohesion.
How can IELTS Laboratory help?
IELTS Laboratory (ielts-laboratory.co) is an independent online platform for IELTS teachers and learners that turns learners’ own Writing and Speaking mistakes into flashcards, lesson packs and practice. It is not affiliated with IELTS, the British Council, IDP or Cambridge.
The Mistakes tab ranks a learner’s or class’s mistakes by damage over any period, from the flashcards on each essay, which makes the week 1 diagnosis quicker.
Flashcards go into the learner’s own deck, and missed cards come back sooner, so a fossilised error keeps getting practised.
Personal puzzles give the learner their own sentences of the target mistake types to rewrite, as in week 4.
First and second drafts sit under one report link, so the rewrite and the original are easy to compare.
Nothing in the product is an official IELTS score, and no tool can promise a band.
FAQ
How do I improve IELTS writing from 6 to 7?
Stop adding more essays and target the two or three problems that recur in your own writing, usually idea development, linking and one or two grammar patterns. Check each new essay for those problems first.
How long does it take to go from band 6 to 7 in writing?
It varies widely by learner, and nobody can promise a timescale. A month of focused work on recurring problems is a sensible first block to review.
Are complex sentences the key to band 7?
Range matters, but accuracy matters too. Complex sentences full of errors rarely help. Fix recurring errors before adding new structures.
Should band 6 learners memorise band 7 essays?
Reading strong models helps, but memorised phrases usually fit the question poorly. Use models to study development and linking, not to copy.
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IELTS Laboratory is not affiliated with, endorsed by, or connected to IELTS, the British Council, IDP: IELTS Australia or Cambridge University Press and Assessment.
About the author. Will Salisbury is a TESOL and Applied Linguistics specialist and the founder of IELTS Laboratory. He has taught English for Academic Purposes and ESL for over 14 years at universities in the UK and Canada. More about Will →