The fastest way to tell
If the prompt asks you to explain, define, or describe, it is probably expository. If it asks you to argue, defend, evaluate, or take a position, it is argumentative.
Expository essay
Use the expository guide when the goal is clear explanation without a side.
Read the guideArgumentative essay
Use the argumentative guide when the goal is persuading a reader that your position is stronger.
Read the guidePrompt clues to look for
Expository essay
- "explain"
- "describe"
- "define"
- "inform"
- "compare and contrast"
Argumentative essay
- "argue"
- "defend"
- "take a position"
- "evaluate"
- "counterargument"
What changes in the essay
Main claim
Expository essay: A controlling idea that organizes explanation.
Argumentative essay: A debatable thesis someone could challenge.
Why it matters: A factual thesis may work for expository writing but fail argumentative writing.
Goal
Expository essay: Help the reader understand.
Argumentative essay: Convince the reader your position is stronger.
Why it matters: The tone and evidence choices should match the goal.
Counterargument
Expository essay: Usually not required.
Argumentative essay: Often required or strongly expected.
Why it matters: Adding an opposing view to an explanation can make it feel unfocused.
Common mistake
Expository essay: Sneaking in unsupported opinions.
Argumentative essay: Listing both sides without landing on one.
Why it matters: Both mistakes blur the assignment type.
Example prompts
Expository signal
"Explain how school start times affect student sleep and academic performance."
Expository, because it asks for explanation rather than a side.
Argumentative signal
"Should high schools move to later start times? Take a position and support it with evidence."
Argumentative, because it asks for a position.
Frequently asked questions
Can an expository essay have a thesis?
Yes, but it is a controlling idea rather than a debatable claim.
Does an argumentative essay have to mention the other side?
Usually yes. A strong argumentative essay addresses a reasonable opposing view.
What if my prompt says analyze?
Look at the object. If it asks you to explain causes or parts, it may be expository. If it asks you to judge or defend a position, it is argumentative.
Use the exact assignment in front of you
Paste the assignment and BetterPaper will identify the task verb, thesis type, and first planning move.