Band 8.0 IELTS Writing Task 2 Model Answer

Overall Band Score: 8.0 · Cambridge IELTS 18 · 2026-09-17

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)

Science has played a crucial role in shaping modern society, from improving healthcare to developing advanced technologies. Some people argue that the most important aim of science should be to improve people’s lives. I largely agree with this view because scientific progress is most valuable when it addresses human needs and solves practical problems, although scientific research should also be allowed to pursue knowledge for its own sake.

One major reason for prioritising the improvement of human life is that scientific discoveries can directly address serious problems. Medical research, for example, has led to vaccines, antibiotics and treatments for numerous diseases that were once life-threatening. During the COVID-19 pandemic, scientists developed vaccines in a remarkably short period of time, helping to reduce severe illness and deaths. Similarly, advances in medical technology, such as MRI scanners and robotic surgery, have enabled doctors to diagnose and treat patients more effectively. These examples demonstrate how science can have a direct and significant impact on people's well-being.

Another important area is environmental protection. Scientific research has helped us understand climate change and develop cleaner technologies. Solar panels, wind turbines and electric vehicles, for instance, can reduce dependence on fossil fuels and help limit air pollution. In developing countries, relatively simple scientific innovations, such as water purification systems and efficient agricultural methods, can also improve living conditions and protect communities from disease and food shortages. Therefore, directing scientific research towards practical human and environmental problems can provide substantial benefits to society.

However, I do not believe that improving people's lives should be the only purpose of science. Basic research is also essential, even when its immediate practical benefits are unclear. Discoveries in areas such as physics, astronomy and genetics may initially appear to have little connection with everyday life, but they can eventually lead to important technological developments. For example, research into fundamental physics contributed to technologies that are now widely used in modern electronics and communications. If scientists were required to focus only on research with immediate practical applications, potentially transformative discoveries might never be made.

In conclusion, I largely agree that improving people's lives should be one of the principal aims of science because scientific knowledge can solve major problems in healthcare, the environment and living standards. Nevertheless, fundamental research should not be neglected, since today's theoretical discoveries may become tomorrow's life-changing technologies.

AI examiner evaluation

Task Achievement / Task Response — Band 8.0

The response fully addresses all parts of the task by taking a clear, well-developed position on whether science's main aim should be improving lives. The student presents a nuanced view, agreeing largely that practical human needs should be prioritised while acknowledging the validity of basic research. Ideas are extensively supported with relevant, specific examples such as COVID-19 vaccines, MRI scanners, solar panels, and fundamental physics. The position is maintained consistently from the introduction through to the conclusion, with arguments fully extended and reasoned, fitting comfortably within the Band 8 descriptor.

Coherence and Cohesion — Band 8.0

The response demonstrates a clear logical organisation and progression throughout. Each paragraph has a distinct central topic, moving smoothly from a well-crafted introduction to body paragraphs discussing healthcare and environmental protection, followed by a balanced counter-argument regarding basic research. Cohesive devices such as 'One major reason', 'Similarly', 'Another important area', and 'However' are used flexibly and appropriately to guide the reader through the argument. Paragraphing is used skillfully and serves the development of the response well, aligning closely with the Band 8 criteria for structural control.

Lexical Resource — Band 7.5

The writer displays a wide, fluent, and flexible range of vocabulary appropriate for an academic discussion. Less common items and collocations are used skillfully, such as 'shaping modern society', 'life-threatening', 'fundamental physics', and 'transformative discoveries'. Word choice is generally precise, and the student demonstrates good control over style and register. There are only occasional minor limitations, but vocabulary use is natural throughout, easily meeting the expectations for a Band 7.5 or 8.0 performance.

Grammatical Range and Accuracy — Band 8.0

The essay exhibits a wide range of complex grammatical structures used with a high degree of accuracy. The majority of sentences are error-free, and the writer handles complex multi-clause sentences effortlessly, such as conditional structures and concessive clauses ('Although scientific research should also be allowed...', 'If scientists were required to focus...'). Punctuation and tense consistency are well-managed throughout. Only rare minor slips occur, making this a strong representative of Band 8 grammar control.

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