Band 8.0 IELTS Writing Task 2 Model Answer

Overall Band Score: 8.0 · Cambridge IELTS 18 · 2026-08-17

IELTS Writing Task 2 question

The most important aim of science should be to improve people’s lives. To what extent do you agree or disagree with this statement? Give reasons for your answers and include any relevant examples from your own knowledge or experience.

 

Student answer (Band 8.0)

The principal purpose of science is a subject of considerable debate. While some argue that scientific research should primarily be directed towards improving human lives, others believe that expanding knowledge and understanding the world are equally important. I strongly agree that enhancing people’s quality of life should be the foremost objective of science, although fundamental research should not be overlooked.

One compelling reason for prioritising human welfare is that scientific discoveries can address some of the most serious challenges facing society. Advances in medicine, for instance, have transformed the treatment of numerous life-threatening diseases and substantially increased life expectancy. Vaccines, antibiotics and sophisticated surgical techniques have saved countless lives and enabled people to live healthier lives. Similarly, scientific innovation in agriculture has increased food production, while developments in renewable energy could help societies reduce their dependence on fossil fuels and tackle climate change.

Furthermore, science can significantly improve people’s everyday lives by making activities more efficient, accessible and safe. Technological developments have revolutionised communication, transportation and education. The internet, for example, allows people in remote areas to access educational materials and communicate with others across the globe. Scientific advances can therefore reduce inequality and create opportunities that were previously unavailable to large sections of society.

Nevertheless, it would be too narrow to argue that science should only pursue immediate practical benefits. Basic research, whose applications may not be apparent at first, is essential for expanding humanity’s understanding of the universe. Many discoveries initially regarded as purely theoretical have subsequently contributed to important technological innovations. Consequently, scientific research should have the freedom to explore fundamental questions while maintaining the broader objective of benefiting humanity.

In conclusion, I strongly agree that improving people’s lives should be the central aim of science. Although expanding knowledge is itself valuable, scientific progress has its greatest significance when it ultimately contributes to better health, greater safety, environmental sustainability and a higher quality of life.

AI examiner evaluation

Task Achievement / Task Response — Band 8.0

The response fully addresses all parts of the prompt. You have taken a clear position from the introduction and maintained it throughout the essay. The ideas are well-developed, particularly the arguments regarding medical and technological advancements. You also demonstrate a sophisticated approach by acknowledging the counter-argument regarding fundamental research, which adds depth to your position. The conclusion effectively synthesises your main points without merely repeating them. The response is well-structured and directly answers the 'to what extent' aspect of the question by balancing the primary goal of science with the necessity of theoretical exploration.

Coherence and Cohesion — Band 8.0

The essay is logically organised with a clear progression of ideas. Each paragraph has a central topic sentence, and the transition between paragraphs is smooth, using cohesive devices like 'Furthermore', 'Nevertheless', and 'Consequently' effectively. The use of referencing is precise, and the paragraphing is logical and appropriate for an academic essay. There is no evidence of mechanical or repetitive use of cohesive devices; instead, they are used to guide the reader through your argument naturally. The overall structure is coherent and easy to follow.

Lexical Resource — Band 7.5

You demonstrate a wide and flexible range of vocabulary, which is used with precision. Phrases such as 'foremost objective', 'compelling reason', 'life-threatening diseases', and 'environmental sustainability' show a high level of lexical control. You use less common items appropriately, such as 'theoretical' and 'innovation', and your collocations are natural throughout the text. There are no noticeable errors in word choice or spelling, and the vocabulary is well-suited to the academic tone of the task.

Grammatical Range and Accuracy — Band 8.0

The essay displays a wide range of complex structures, including conditional sentences, relative clauses, and passive constructions. The majority of your sentences are error-free, and your control over punctuation is excellent. You use a variety of sentence lengths and structures to maintain interest and clarity. There are no significant grammatical errors that impede communication, and the few minor slips that might occur are rare and do not detract from the overall high quality of the writing. The grammar is consistently accurate and sophisticated.

See this exact question answered at other band scores — the same prompt compared across bands.

Browse more IELTS Writing model answers or get your own writing scored by the same AI examiner.