A strong vocabulary list will not rescue an answer that misses the question. A beautifully written introduction will not compensate for an unclear overview in Academic Task 1. If your target is Band 7, 8 or 9, you need to know exactly how is IELTS writing scored - because the examiner is not judging your effort, ideas or how difficult the topic felt. They are judging what appears on the page against fixed public criteria.
That is good news. IELTS Writing is not a mystery. Once you understand where marks come from, you can practise with purpose, spot the weaknesses that hold your score down and produce confident answers under time pressure.
How is IELTS Writing scored in the test?
Your Writing paper has two tasks, completed in 60 minutes. Task 1 should take about 20 minutes and Task 2 about 40 minutes. Although both tasks receive a band score, Task 2 carries twice as much weight as Task 1 when your final Writing band is calculated.
For each task, an examiner awards a score for four equally weighted criteria. Those scores are combined to create the task band, then Task 2 is weighted more heavily in the overall result. This means a weak essay can damage your Writing score more than a weak report, chart description or letter.
The four criteria are:
- Task Achievement or Task Response
- Coherence and Cohesion
- Lexical Resource
- Grammatical Range and Accuracy
A useful rule: do not chase sophisticated language before you have answered the task fully. Examiners cannot award Band 8 language marks as a substitute for Band 5 task fulfilment.
1. Task Achievement and Task Response
This criterion asks one direct question: did you answer the task properly?
In Academic Task 1, Task Achievement covers whether you select and report the key features of the chart, table, map, process or diagram. For most data tasks, a clear overview is essential. It should identify the main trends, highest or lowest figures, major comparisons or striking changes. Listing every number without showing what matters is not a high-band response.
For example, if a graph shows that car use rose sharply while cycling fell slightly, your overview must communicate those dominant trends. A paragraph packed with accurate data but no overview leaves the examiner doing the analytical work for you.
In General Training Task 1, Task Achievement means covering every bullet point, using the right tone and making the purpose of the letter clear. A complaint to a hotel should not sound like a casual message to a friend. Missing one bullet point, or writing in an unsuitable style, limits the score even when your grammar is accurate.
In Task 2, Task Response assesses how fully and directly you answer the essay question. High-band essays take a clear position where required, develop relevant ideas and support them with explanation or examples. They do not simply repeat the topic in different words.
The trade-off is simple: ambitious ideas are useful only when you can explain them. One well-developed reason is stronger than three vague points. If the question asks whether you agree or disagree, do not write a neutral discussion unless you make your position unmistakable.
What Band 7+ task performance looks like
Band 7 answers address all parts of the prompt, present a clear position and develop main ideas. Band 8 answers are more fully developed, relevant and precise. At Band 9, ideas are entirely relevant and expertly extended, with no noticeable gap in task coverage.
Before writing, spend a minute identifying the question type, every instruction and your central answer. That minute prevents one of the most expensive IELTS errors: writing a good essay for the wrong question.
2. Coherence and Cohesion
Coherence is the logical flow of your answer. Cohesion is the way your words, sentences and paragraphs connect. Examiners want to see a response that is easy to follow from beginning to end.
A high-scoring Task 2 essay normally has a focused introduction, clear body paragraphs with one central purpose each, and a conclusion that answers the question rather than adding a new argument. In Task 1, organise information into logical groups instead of describing the visual from left to right with no clear plan.
Cohesive devices such as “however”, “therefore”, “for example” and “in contrast” can help, but they are not marks by themselves. Overusing them often makes writing sound mechanical and can create errors in meaning. Band 7 and above requires flexible, appropriate linking, not a connector at the start of every sentence.
Referencing also matters. Pronouns and phrases such as “this trend”, “these figures” or “the former” should have a clear meaning. If the reader has to stop and ask what “it” refers to, cohesion is weaker.
Aim for clear paragraphing, logical progression and controlled linking. Your examiner should never need to hunt for your main point.
3. Lexical Resource
Lexical Resource is your ability to use vocabulary accurately, appropriately and flexibly. This includes range, precision, collocation, spelling and word formation.
Many candidates misunderstand this criterion. Band 8 vocabulary is not a page full of rare words. It is the accurate use of language that expresses your meaning precisely. Writing “a significant increase” is useful when the rise is genuinely large. Calling a small change “dramatic” is not impressive - it is inaccurate.
Strong lexical control includes natural word partnerships. We say “pose a threat”, “meet a requirement”, “play a role” and “a growing proportion”. These combinations make writing sound controlled because they are the language educated users actually choose.
You also need enough range to avoid repetition. If every paragraph uses “good”, “bad”, “important” and “people”, your score will be limited. But forced synonyms are risky. “Individuals” may replace “people” in formal writing, but “humans” often sounds unnatural in an essay about public policy.
For faster results, build topic vocabulary around common IELTS areas such as education, work, health, technology and the environment. Learn useful phrases in context, then use them in timed answers. A vocabulary notebook without active writing practice will not change your band score.
4. Grammatical Range and Accuracy
This criterion measures both the variety of grammar you use and how accurately you use it. Simple sentences can be correct, but a response made entirely of short basic structures will struggle to reach a high band.
To reach Band 7, you need a mix of simple and complex sentences, with frequent error-free sentences and errors that rarely reduce clarity. Band 8 requires a wide range of structures used with the majority of sentences error-free. Band 9 writing has full flexibility and precision.
Useful structures include complex sentences with clear subordination, relative clauses, conditionals, concession clauses and accurate comparison language. In Task 1, you may need the past tense for historical data, the future for projections and comparative structures for trends. In Task 2, sentence variety helps you qualify claims and explain cause and effect.
Do not force complexity into every line. A long sentence with three grammar errors scores worse than two clear, controlled sentences. Accuracy comes first, then range.
The errors that repeatedly cost bands
Small mistakes can accumulate quickly: subject-verb agreement, missing articles, singular and plural nouns, incorrect prepositions, comma splices and inconsistent verb tenses. These are especially costly when they appear repeatedly.
During the final two minutes, check the errors you personally make most often. If articles are your weakness, scan for articles. If you lose plural endings, check every countable noun. General proofreading is less effective than targeted proofreading.
Why two similar answers can receive different bands
Two essays may both have relevant ideas and a good structure, yet receive different scores because one is more precise. The higher-band candidate may answer every part of the question, use paragraphs with clearer progression, choose more natural vocabulary and make fewer grammar errors.
Equally, a candidate may write fluent English but lose marks through task control. An Academic Task 1 response without an overview, a General Training letter with the wrong tone, or a Task 2 essay that discusses both sides but never gives the requested opinion will not reach its potential.
This is why band improvement needs diagnosis. Do not merely write more essays. Identify which criterion is holding you at Band 6, then practise that skill deliberately.
A practical scoring checklist before you finish
Ask yourself whether you answered every part of the task, made your position or overview clear, organised ideas into purposeful paragraphs and used vocabulary you can control accurately. Then check whether your sentences show variety without sacrificing clarity.
Practise marking your own work against the four criteria, but be honest about the limits of self-assessment. Candidates often notice spelling errors but miss weak development, unclear progression and unnatural vocabulary choices. Examiner-informed feedback is where guesswork ends.
Your next Writing score will not rise because you write longer answers or memorise more phrases. It rises when every paragraph gives the examiner clear evidence of task control, logical organisation, precise language and accurate grammar. Train those four signals repeatedly, and Band 7, 8 or 9 becomes a performance target rather than a hope.