Strong Thesis Statement for Expository Essays [Examples and Formula]

A strong thesis statement is the backbone of any well-written expository essay. It provides a clear roadmap for the direction of your essay and sets the tone for what’s to come. 

In this blog post, we want to make it super easy for you. We will explore some (good and bad) examples of thesis statements for expository essays. By the time you finish, you will walk out with a clear understanding and a formula you can use to craft your own effective statement.

What is an expository essay?

An expository essay is a type of writing that explains, informs, or describes a subject in detail. It is a neutral and objective piece of writing that presents a balanced analysis of a topic, backed up by facts and evidence. The purpose of an expository essay is to inform the reader on a specific subject matter, without the writer’s personal opinion or bias.

The ideal topics for an expository essay may include explaining a concept or process, providing information, comparing and contrasting, analyzing cause and effect, or defining a term, such as:

  • “The impact of social media on communication and relationships.”
  • “The causes and effects of climate change.”
  • “The role of education in personal and professional development.”
  • “The role of education in personal and professional development.”

Differentiating different types of thesis statements


An expository thesis statement presents a neutral explanation of a topic or issue, usually with the aim of informing the reader. It presents a fact-based and balanced view without involving the writer’s opinion. Example: “The impact of social media on teenagers will be analyzed through a review of relevant studies.”


An argumentative thesis statement, on the other hand, should take a stance on a topic and argues for or against it. It presents the writer’s opinion and aims to persuade the reader. Example: “The excessive use of social media by teenagers is harmful and should be limited.”


An analytical thesis statement presents an analysis of a topic, breaking it down into its component parts and examining them in detail. It aims to provide a deeper understanding of the topic. Example: “The increasing popularity of social media among teenagers can be attributed to its convenience and ease of use, but also raises concerns about privacy and online safety.”

More on thesis statements

Jump into these quick guides to write a strong thesis statement in no time. We have included tons of good (and bad) examples to show you how to do it right. A simple formula is included in each article to help you create your strong thesis statement with suggested wordings.

What does a strong expository thesis statement do in an essay?

A thesis statement, as you may already know, is the most important sentence for your paper. You can think of it as an annotated map for your audience. This can make sure your readers can follow in the direction you want to go to. 

A strong expository thesis statement sets the tone for a well-organized and well-supported essay, providing direction, clarity, and focus for the reader as well as the writer.

An expository thesis statement should sound neutral

One thing that distinguishes an expository thesis statement from its counterparts (e.g. argumentative or analytical thesis statement) is that it should not be debatable. 

Expository essays aim to provide neutral, objective information and analysis about a subject. The thesis statement should simply state the main argument or point of the essay in a clear and concise manner. It should not express a personal opinion or attempt to persuade the reader to a particular point of view. Instead, the focus is on presenting balanced and evidence-based information about the subject.

What makes a strong expository thesis statement?

Writing a strong thesis statement takes some practice. And it is not as hard as it seems. A strong expository thesis statement has the following characteristics:

  1. Clarity
  2. Specificity
  3. Relevance
  4. Evidence-based
  5. Neutral

Let’s go through these points with some good and bad examples.

1. Clarity

A strong thesis statement should be clear and concise, expressing the main argument in a single sentence.

Bad Example: “Technology is a complicated thing that affects our lives in many ways.”

Good Example: “The widespread use of technology has had a significant impact on our daily lives, both positively and negatively.”

The bad example is not clear and concise, as it uses vague language and makes a general statement without a clear focus. The good example, on the other hand, is clear and concise, presenting a specific and focused argument.

2. Specificity

A strong thesis statement should be specific and focused, avoiding generalizations or vague language.

Bad Example: “Education is important.”

Good Example: “A solid education system is crucial for the development of a country’s economy and the success of its citizens.”

The bad example is too general and vague, making a statement without providing specific details or examples. A good example is specific and focused, presenting a clear and well-defined argument.

3. Relevance

Your thesis statement should be relevant to the topic and supports the main argument of the essay.

Bad Example: “Music is a form of art.”

Good Example: “The role of music in promoting cultural awareness and tolerance cannot be overstated.”

The bad example is not relevant to the topic of the essay and does not support the main argument. The good example, on the other hand, is relevant and directly supports the main argument of the essay.

4. Evidence-based (as opposed to an argument)

A strong expository thesis statement needs to be supported by facts and evidence that will be discussed in the essay.

Bad Example: “The moon landing was fake.”

Good Example: “Despite the conspiracy theories, extensive evidence supports the reality of the moon landing by the United States in 1969.”

The bad example is not evidence-based, as it makes a statement without supporting it with facts or evidence. The good example, on the other hand, presents an argument that can be supported by evidence that will be discussed in the essay.

5. Neutral (without taking any stand)

This is specific to expository thesis statements. It should not express personal opinions or bias, but rather presents neutral information about the subject.

Bad Example: “Climate change is not real.”

Good Example: “The existence of climate change is a highly debated and controversial issue, with compelling arguments on both sides.”

The bad example is not neutral, as it expresses a personal opinion without considering the other side of the argument. The good example, on the other hand, presents a neutral and objective stance on the topic.

In summary, a strong expository thesis statement is clear, specific, relevant, evidence-based, and neutral, providing a roadmap for the essay and setting the tone for the information that will be presented.

How to create a strong thesis statement for an expository thesis statement?

Creating a strong thesis statement for an expository essay requires careful research, analysis, and refinement to ensure that it is clear, specific, relevant, evidence-based, and neutral.

Here are some steps to create a strong thesis statement for an expository essay:

Step 1: Identify the topic: Start by understanding what the essay will be about and what the main argument will be.

Step 2: Gather information: Research the topic and gather the information that supports the main argument.

Step 3: Analyze the information: Organize the information and identify the key points that will be used to support the main argument.

Step 4: Create the thesis statement: Ensure it is neutral and evidence-based: Make sure the thesis statement presents neutral information that can be supported by evidence that will be discussed in the essay.

Step 5: Refine the thesis statement: Review the working thesis statement and make changes to ensure that it is clear, specific, and relevant.

Test the thesis statement: Check the thesis statement by asking questions like 

  • “Is it clear?”
  • Is it specific?”
  • “It is neutral without taking any stand?”
  • “Can it be supported by evidence?”

A formula for creating a strong expository thesis statement

Still not sure if you are ready or not?

No worries. Here’s a formula you can use to create a strong thesis statement for an expository essay:

[Main idea/topic] + [purpose/aim of the essay] + [evidence/support for the main idea]

= A strong expository thesis statement

Example wordings for each part of the formula:

Main idea/topicPurpose/aim of the essayEvidence/support for the main idea
“The impact of…”
“The role of…”
“The significance of…”
“The effect of…”
“be examined”
“be analyzed”
“be explored”
“be evaluated”
“be explained”
“through…”
“based on…
“by…”

By combining these elements, you can create a strong thesis statement that clearly states the main idea, purpose, and evidence for the expository essay. Here are the outcomes:

  • The impact of social media on teenagers will be analyzed by examining the results of recent studies on the topic.”
  • The role of exercise in maintaining good health will be explored based on a review of relevant scientific literature.”
  • The significance of parental involvement in a child’s education will be evaluated by analyzing the results of various studies on the topic.”
  • The effects of air pollution on the environment will be examined through a critical analysis of available data and research.”

Final thoughts and recommendations

There you have it! Remember, a strong expository thesis statement should always be neutral and evidence-based. So take a deep breath and trust yourself in crafting a strong thesis statement for your expository essay!