ACT® · Writing: The Optional Essay and Its Four Domains
Introductions and Conclusions Under the Clock
Under the clock, an introduction should take three sentences and a conclusion should add one new insight, because the rubric scores a complete plain essay over an unfinished brilliant one.
Forty minutes is not enough to afford a slow windup. A long, polished introduction can only earn what the rubric rows already reward: a clear position and some context. It cannot earn more than that, no matter how good the prose is. But it can cost you the one thing that sinks a score fast: an unfinished third body paragraph. So the math only runs one way. Spend as little time as possible on the opening and closing, and protect the minutes for the argument itself.
A three sentence introduction does three jobs and stops. Sentence one gives context: what the prompt's debate is actually about. Sentence two raises the stakes: why this debate matters to real people making real decisions. Sentence three is the thesis: your position, stated plainly enough that a grader could underline it. Nothing is wasted because nothing repeats. The conclusion works the same way in reverse. Instead of restating the thesis and summarizing each body paragraph, write one or two sentences that say what your argument implies beyond the prompt itself: a consequence, a tradeoff, a broader principle. That is what 'adding significance' means. A conclusion that only replays the essay earns nothing new, because the rubric rewards insight, not repetition.
This is why the time math matters: if the opening and closing together take 6 of the 32 minutes left for writing, that leaves 26 minutes for three body paragraphs, roughly 8 to 9 minutes each. Treat the intro and conclusion as fixed, small costs, and let the body paragraphs take the time they need to finish.
Key terms
- Thesis
- The one sentence stating your position, placed at the end of the introduction so it is easy to find.
- Stakes
- The reason the prompt's debate matters to real people, given in the introduction's second sentence.
- Adding significance
- Ending with what your argument implies beyond the prompt, rather than restating what was already said.
- Rubric rows
- The four scoring domains that each judge a separate quality of the essay independently.
- Unfinished essay
- An essay missing a complete final paragraph, which scores lower than a complete but plain one.
Watch it explained
- How it worksHow does a three sentence introduction carry context, stakes and a thesis with nothing wasted?
- How it worksWalk me through writing a conclusion that adds significance rather than repeating the essay.
- Worked exampleFind how many minutes remain for three body paragraphs when the opening and closing take 6 of 32.
- Common mistakeWhy doesn't an unfinished essay with a brilliant opening beat a complete one with a plain opening?
Check yourself
End of topic.