Band 7.0 IELTS Writing Task 1 Model Answer
Overall Band Score: 7.0 · Cambridge IELTS 19 · 2026-07-28
IELTS Writing Task 1 question
The diagram below shows how a biofuel called ethanol is produced.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Student answer (Band 7.0)
The two pie charts compare the percentage of households by the number of people living in them in 1995 and 2005 over a ten-year period.
Overall
Overall, it is evident that two-person households accounted for the highest proportion in 1995, whereas six-person households had the lowest percentage. By 2005, three-person households became the most common, while one-person households recorded the smallest share.
Body Paragraph 1
Looking at the details, in 1995, two-person households represented the largest proportion at approximately 31%, followed by three-person households at 20%. Four-person households accounted for 18%, while one-person households made up 17%. The figures for five- and six-person households were much lower, at 8% and 6%, respectively.
Body Paragraph 2
In 2005, three-person households accounted for the highest percentage, at around 35%. Two-person households fell slightly to 30%, while four-person households stood at 17%. In contrast, five-person households increased to 13%, whereas the proportions of one- and six-person households declined significantly to 2% and 3%, respectively.
AI examiner evaluation
| Criterion | Band |
|---|---|
| Task Achievement / Task Response | 5.5 |
| Coherence and Cohesion | 7.5 |
| Lexical Resource | 7.5 |
| Grammatical Range and Accuracy | 7.5 |
| Overall | 7.0 |
Task Achievement / Task Response — Band 5.5
The student has failed to address the task prompt. The prompt explicitly asks for a description of a diagram showing the production of ethanol (a process diagram). However, the student has written a report about two pie charts comparing household sizes in 1995 and 2005. This is a significant misunderstanding of the task requirements. While the report itself is well-structured and contains accurate data reporting, it describes entirely the wrong visual information. According to the IELTS criteria, a response that is off-topic or addresses the wrong task must be penalised heavily in Task Achievement, as the primary requirement of the task has not been met.
Coherence and Cohesion — Band 7.5
The response is logically organized with a clear introduction, an overview, and two distinct body paragraphs. The use of cohesive devices such as 'whereas', 'while', 'in contrast', and 'respectively' is effective and helps the reader follow the comparison of data. Paragraphing is used appropriately to separate the two time periods. Despite the content being irrelevant to the prompt, the internal structure and flow of the text are strong, demonstrating a good grasp of how to organize a comparative report.
Lexical Resource — Band 7.5
The vocabulary used is appropriate for a data description task. The student employs a range of relevant terms such as 'accounted for', 'proportion', 'recorded', 'share', and 'declined significantly'. The language is precise and natural, allowing for clear communication of the data points. There are no spelling errors, and the word choice is consistently accurate for the context of describing statistical trends, even though the context itself is incorrect.
Grammatical Range and Accuracy — Band 7.5
The response demonstrates a good command of grammatical structures. There is a mix of simple and complex sentences, and the accuracy is high. Examples include 'two-person households accounted for the highest proportion in 1995, whereas six-person households had the lowest percentage.' Punctuation is used correctly throughout, and there are no major grammatical errors that impede meaning. The control of verb tenses (past tense for 1995 and 2005) is consistent and correct.
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