Writing a Strong Thesis Statement
The thesis statement is the single sentence that tells your reader exactly what position you are taking and why it matters. A weak thesis states a fact; a strong thesis takes a stand that a reasonable person could dispute and that you can support with evidence.
What makes a thesis debatable
A debatable thesis is one where at least two defensible positions exist. If no one could reasonably disagree, you are writing a fact, not an argument.
- Weak: Social media is popular among teenagers. (A fact, not an argument.)
- Strong: Schools should limit phone use during class because it improves focus and reduces distraction.
How to build a thesis in three steps
- Narrow the topic. Turn a broad subject into a single, specific question you can answer.
- Take a position. Answer that question with a clear yes or no, or a focused claim.
- Preview your reasoning. Add the main reason (or reasons) that will structure your body paragraphs.
Strong vs weak thesis examples
- Weak: Pollution is bad for the environment.
- Strong: Cities should invest in electric buses because they cut emissions, improve air quality and lower long-term operating costs.
- Weak: There are pros and cons to a four-day school week.
- Strong: A four-day school week improves student well-being without lowering achievement, and districts should adopt it where transportation allows.
Where the thesis belongs
In most essays the thesis appears at the end of the introduction, so the reader knows the position before the body paragraphs begin. Every claim that follows should connect back to it. If a paragraph does not support the thesis, it probably belongs in a different essay.
For help placing the thesis in context, see how to start an argumentative essay or review our argumentative essay examples.