How to write a thesis statement (with strong examples)
Turn a topic into a clear, arguable claim for your essay, with a simple formula, weak and strong examples and a quick test.
GCSEA-LevelHigh SchoolAPCurriculum fit: GCSE English Language and Literature (argument and analytical writing); A-Level essays. US: Common Core ELA Writing standards (arguments, grades 9-12); AP English Language and Literature.
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What is it?
A thesis statement is one or two sentences that state the main argument of your essay. It tells the reader what position you will take and gives a sense of how you will support it. It usually appears at the end of the introduction.
A strong thesis is specific and arguable: someone could reasonably disagree with it. It is not simply a fact or a description of the topic.
Key formulas and ideas
- Formula: topic + position + reasons.
- Test 1: Is it arguable? Could someone take the opposite view?
- Test 2: Is it specific? Does it avoid vague words like 'good' or 'bad'?
- Test 3: Can I support it with evidence in this essay?
Worked examples
Example 1: Weak to strong
Question: Improve: 'This essay is about social media.'
- Choose a position: it affects concentration.
- Add reasons: constant switching between tasks.
- Write it as one clear claim.
Answer: Social media harms teenagers' concentration because it rewards constant switching between tasks.
Example 2: Literature thesis
Question: Write a thesis about how a writer presents a character as lonely.
- State the character and the effect.
- Include how the writer does it.
Answer: The writer presents the narrator as isolated by contrasting her silence with the noisy world around her.
Example 3: Spot the problem
Question: Why is 'Pollution exists' a poor thesis?
- It is a fact that nobody would dispute.
- It does not take a position or give a reason.
Answer: It is not arguable and not specific
Common mistakes
- Writing a question instead of a claim.
- Announcing 'In this essay I will discuss...' with no position.
- Making the claim too broad to prove in one essay.
- Changing the thesis halfway through the essay.
Practice questions
Frequently asked questions
Can a thesis be a question?
Not usually. A thesis should answer the question by taking a clear position.
Can I change my thesis while writing?
Yes, in a draft. Revise the thesis so that it matches the argument you actually make in the finished essay.
Related guides
Essay structure: how to plan and write a clear essay
Plan an essay step by step, from brainstorming to a strong introduction, well-organised paragraphs and a conclusion that answers the question.
GCSEA-LevelHigh SchoolAPPEEL and CER paragraphs: how to structure analysis
Build clear paragraphs with PEEL (UK) or Claim-Evidence-Reasoning (US), with worked examples for English and science answers.
KS3GCSEA-LevelMiddle School+2Logical fallacies and how to evaluate an argument
Judge whether an argument is convincing and spot common logical fallacies such as ad hominem, straw man and false dilemma.
GCSEA-LevelHigh SchoolAPSources and review
- DfE: National curriculum in England, English programmes of study
- Common Core State Standards: English Language Arts and Literacy
Reviewed by StudyMorrow editorial review on 5 Nov 2026.