Why the Average IELTS Writing Score Is the Lowest (And Three Fixes That Actually Work)
IELTS performance data has consistently shown Writing as the lowest-scoring skill, with global averages in recent years sitting at around 5.9, roughly 0.4 bands below Listening, Reading, and Speaking. If your Writing band has brought your overall profile down, you are in large company.
The contrast with Speaking deserves attention. Candidates who speak fluently at Band 6 or above often assume their writing will match. That assumption is incorrect in most cases. Speaking rewards fluency and natural language even when accuracy slips. Writing examiners apply a consistent rubric across four equally weighted criteria with no room for the compensatory signals that help in a live conversation. Understanding that contrast is the first step toward closing the gap.
This article walks through why test-takers struggle with Writing the most, which of the four Writing criteria loses candidates the most marks, and three changes that target the right areas.
The IELTS Writing Score That Most Candidates Receive
The average IELTS Writing score, according to the annual IELTS test taker performance data from ielts.org, sits at around 5.9. A score of 5.9 means most test takers performing at the global average are producing responses that only partially address the task, with adequate organisation but some lapses in coherence and recurring vocabulary errors.
For candidates targeting 6.5 or 7.0 for university admission or a visa application, the distance to close is between 0.5 and 1.0 bands. That is achievable. The reason many candidates stall at their current Writing band is not a lack of effort. It is a lack of feedback specific enough to point at the criterion causing the problem.
Why Writing Is the Hardest IELTS Skill to Score Well
Speaking allows you to recover from errors through rephrasing and conversational momentum. Writing provides none of that. You must simultaneously plan your argument, draft clear sentences, manage discourse structure across paragraphs, and monitor your response against four separate criteria, all within 60 minutes.
A candidate who loses the thread of their argument while speaking can simply redirect. A candidate who loses it in Writing produces visible incoherence across multiple paragraphs, which directly affects the Coherence and Cohesion criterion.
Writing improvement is also slower than Speaking improvement because it requires two skills to develop simultaneously: producing well-structured prose at speed, and recognising when your response actually meets the examiner’s criteria rather than merely sounding adequate. This combination keeps the average IELTS Writing score consistently below other skills.
The Four Criteria IELTS Examiners Use to Mark Every Response
IELTS Writing is assessed against four criteria, each contributing 25% to the final band score. For Task 2, these are: Task Response, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy. For Task 1, Task Response is replaced by Task Achievement, but the remaining three criteria are identical.
These criteria are published jointly by the British Council, IDP: IELTS Australia, and Cambridge English. Understanding them by their official names allows you to map your specific weaknesses to the criterion being assessed and to understand examiner feedback precisely.
Many candidates mentally simplify the rubric into “grammar” and “vocabulary” and ignore the other two criteria. That simplification is a significant preparation mistake. Grammar and vocabulary together account for 50% of the mark. Task Response and Coherence and Cohesion account for the other 50%, and they are where the majority of Band 5 and 6 candidates underperform relative to their target.
Where Most Candidates Actually Lose Their Average IELTS Writing Score Marks
Research on IELTS Writing performance consistently identifies Coherence and Cohesion and Task Response as the two criteria where Band 5 and Band 6 candidates lose the most marks, separate from vocabulary and grammar issues.
According to the official IELTS Writing band descriptors, published jointly by the British Council, IDP: IELTS Australia, and Cambridge English, at Band 5 on Coherence and Cohesion a candidate uses cohesive devices but not accurately or purposefully. At Band 7, the same descriptors require that a range of cohesive devices is used appropriately throughout. The practical difference is between a response where discourse markers appear mechanically and one where they genuinely connect ideas.
At Band 5 on Task Response, the official descriptors indicate that the response only partially addresses the task requirements and that main ideas, while present, are not fully developed or supported. At Band 7, the response addresses all parts of the task and extends and supports the main ideas with clear development.
For guides on task-specific structure, see the IELTS Writing Task 2 essay structure guide and the Task 1 Academic chart description guide.
The Biggest Misconceptions About Raising the Average IELTS Writing Score
Most candidates assume that improving their vocabulary and grammar is the primary path to a higher Writing band. Both improvements help, but neither addresses the criteria that most commonly separate Band 6 from Band 7. This misconception explains why many candidates plateau at the average IELTS Writing score despite sustained preparation. The four criteria are weighted equally. A candidate scoring Band 5 on Task Response and Band 7 on both language criteria ends up with an overall Writing band below 7.0 regardless of vocabulary quality. Raising the Writing score means raising the weakest criterion, not only the strongest.
Word count is a related misconception. The minimum for Task 1 is 150 words; for Task 2 it is 250 words. Falling below these minimums carries a penalty. Exceeding them does not add marks. A 400-word Task 2 response that only partially addresses the question will score lower on Task Response than a 275-word response that fully addresses both parts of the task with well-developed arguments. A pattern common among Band 6 candidates is writing more words in the hope of covering more ground, which often produces repetition and dilutes coherence. A tighter, well-structured essay consistently outperforms a longer one that revisits the same point.
Band 5 vs Band 7: What the Official Descriptors Say
The official IELTS Writing band descriptors, jointly published by the British Council, IDP: IELTS Australia, and Cambridge English, define precisely what examiners look for at each level. The difference between Band 5 and Band 7 is specific, not general.
For Task Response at Band 5, the official position is that the response only partially addresses the task requirements. At Band 7, the response addresses all parts of the task, presents a clear position, and extends and supports the main ideas rather than merely listing them. The distinction is not about which argument you make. It is about whether every part of the question receives a substantive, developed answer.
For Coherence and Cohesion, a Band 5 response uses cohesive devices but not accurately or purposefully. At Band 7, the range of cohesive devices is used appropriately. This explains why candidates who insert discourse markers throughout their writing can still score Band 5 on this criterion: the presence of markers is not sufficient; they must connect ideas accurately.
For task-specific structure guidance, see the IELTS Task 1 General letter writing guide and the agree-or-disagree essay template, which both show how structure maps to the rubric.
Three Changes That Have the Highest Impact on a Writing Band Score
Read every part of the task before planning your answer. Task 2 questions frequently contain two sub-questions, a condition, and a scope. Responding to the main topic without addressing a secondary component is a common source of partial Task Response. Reading the task twice, underlining each element, and checking your plan against every part before writing removes the most common cause of Task Response underperformance.
State your position clearly in your introduction and build consistently toward it. Coherence and Cohesion drops when the examiner must infer whether a paragraph is supporting or qualifying your main point. State your position once in the introduction. Each body paragraph then adds one specific supporting reason, developed in full. Do not return to the same point using different phrasing.
Write timed responses regularly, not just study model answers. Reading model essays builds awareness of what good writing looks like. It does not build the speed, structure management, and judgement required to produce it under exam conditions. Candidates who write timed Task 2 responses two to three times per week and receive criterion-level feedback improve faster than those who study model essays for the same duration. The IELTS problem solution essay guide includes timed practice strategies that apply to any Task 2 question type.
How to Know Whether Your Writing Practice Is Moving Your Score
Without criterion-level feedback on every response you write, you cannot tell whether your practice is working. You can sense that your writing sounds more coherent to you. You cannot see whether your Task Response score has moved, or whether your Coherence and Cohesion is still at Band 5.
Human tutors who mark writing practice provide this feedback, but scheduling and cost create gaps that interrupt consistent practice. Candidates studying independently without criterion-level feedback produce responses that feel improved but do not know where their score is capped.
The only way to know whether the average IELTS Writing score you are targeting is within reach is to receive feedback mapped to the four criteria on every response you submit, not only before an exam.
Practise IELTS Writing with sentence-by-sentence criterion feedback using Speechful’s IELTS Writing AI grader. It scores your response against Task Achievement or Task Response, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy, and identifies which specific parts of your response are holding your band down. Available any time, results in seconds.
