🎒ACT Review

The ACT Reading test gives you a total score plus a subscore in each of three areas. The percentages below show roughly how many Reading questions feed into each subscore.

Note: the numbers don't add up to 100% because some questions count toward more than one subscore.

Key Ideas and Details (52–60%)
Craft and Structure (25–30%)
Integration of Knowledge and Ideas (13–23%) — this is what we're focusing on here

According to the ACT, this category "requires you to understand authors' claims, differentiate between facts and opinions, and use evidence to make connections between different texts that are related by topic. Some questions will require you to analyze how authors construct arguments and to evaluate reasoning and evidence from various sources."

That's a dense description. Here's what it actually boils down to on test day.

Keys to Integration of Knowledge & Ideas

To score well in this category, you need five core skills:

Understand authors' claims — What is the writer actually arguing?
Differentiate between facts and opinions — Which statements are verifiable, and which reflect the author's perspective?
Connect related texts — How do two passages on the same topic relate to each other?
Analyze argument construction — How does the author build and support their case?
Evaluate reasoning and evidence — Is the evidence credible? Is the logic sound?

These skills all revolve around critical thinking. You're not just reading for comprehension; you're reading like a judge, weighing the quality of what each author presents.

Understanding the Author's Claims

An author's claim is their main argument or central message. Sometimes it's stated outright in a thesis sentence. Other times it's implied, and you have to piece it together from the evidence and examples the author chooses to include.

Here's how to pin down the claim:

Look for direct statements. Thesis sentences often appear near the beginning or end of a passage. Watch for phrases like "The evidence suggests..." or "It is clear that..."
Track repeated ideas. If the author keeps circling back to the same point, that's likely the central claim.
Consider the context. Is this passage responding to a debate? Is it part of a larger conversation? Knowing why the author is writing helps you understand what they're arguing.
If the claim is implicit, work backward. Look at the evidence and examples provided, then ask: What conclusion is all of this pointing toward?

Pay attention to tone and word choice, too. An author who uses urgent, forceful language is signaling something different from one who writes in a measured, cautious tone. Both choices reveal what the author wants you to take away.

Distinguishing Facts vs. Opinions

Facts are objective, verifiable statements supported by evidence or data. "The Earth orbits the Sun in approximately 365.25 days" is a fact.

Opinions are subjective expressions of belief, interpretation, or attitude. "Space exploration is the most important scientific endeavor of our time" is an opinion, even though it sounds confident.

On the ACT, you'll need to tell these apart quickly. A few reliable signals:

Factual statements can be checked against outside sources (studies, statistics, historical records). They use neutral, precise language.
Opinions often include evaluative words like best, worst, should, important, unnecessary. They may also use emotionally charged language designed to persuade rather than inform.
Watch for opinions disguised as facts. A statement like "Studies show this is the best approach" sounds factual, but "best" is still a judgment call. The ACT loves testing whether you can spot this.

Also keep in mind that facts can be presented selectively. An author might cite accurate data but leave out contradicting evidence. Recognizing this selective presentation is part of what the ACT is testing.

The ACT Reading section includes a paired-passage set where two texts address the same topic from different angles. Your job is to identify how the passages relate: Do they agree? Disagree? Does one build on the other?

To handle these questions well:

Read each passage on its own first. Identify each author's claim and the evidence they use.
Look for overlap. Do both passages reference the same events, data, or ideas? Where they overlap, note whether the authors interpret the shared material differently.
Identify points of contrast. One author might emphasize economic effects while the other focuses on social consequences. One might be optimistic where the other is skeptical.
Cite specific evidence when answering. The correct answer on paired-passage questions almost always ties back to concrete details in the text, not vague thematic similarities.

Think of it like listening to two people debate the same topic. You're tracking where they agree, where they diverge, and what evidence each one leans on.

Analyzing How Authors Construct Arguments

This skill is about seeing the architecture of an argument, not just its conclusion. You're looking at how the author builds their case.

Break it down into components:

Claim: What's the main argument?
Evidence: What supports it? (data, examples, expert testimony, anecdotes)
Reasoning: How does the author connect the evidence to the claim? Is the logic sound?
Counterarguments: Does the author acknowledge opposing views? How do they respond?

You should also recognize common reasoning patterns:

Deductive reasoning moves from a general principle to a specific conclusion. (All mammals are warm-blooded. Dolphins are mammals. Therefore, dolphins are warm-blooded.)
Inductive reasoning moves from specific observations to a broader conclusion. (Every dolphin we've studied is warm-blooded, so all dolphins are probably warm-blooded.)

Finally, notice the rhetorical appeals the author uses:

Ethos — establishing credibility ("As a researcher with 20 years of experience...")
Logos — logical appeals using data and reasoning
Pathos — emotional appeals designed to move the reader

Recognizing these strategies helps you evaluate whether an argument is genuinely strong or just persuasively packaged.

Evaluating Sources of Evidence and Reasoning

This is where you put on your skeptic's hat. The ACT wants to know if you can judge the quality of an argument, not just identify it.

Ask yourself these questions as you read:

Are the sources credible? Evidence from peer-reviewed research or established institutions carries more weight than unsourced claims or anonymous anecdotes.
Is the evidence relevant? Even reliable data can be irrelevant if it doesn't actually connect to the author's claim.
Is the evidence current? Outdated statistics may no longer reflect reality.
Are there logical fallacies? Common ones to watch for:
- Ad hominem — attacking the person instead of their argument
- False cause — assuming that because one thing followed another, it was caused by it
- Hasty generalization — drawing a broad conclusion from too little evidence
- Slippery slope — claiming one event will inevitably lead to extreme consequences
- Appeal to authority — citing an "expert" who has no relevant expertise
Does the author acknowledge limitations? Strong arguments address counterevidence. Weak arguments ignore it.

When the passage includes graphs, charts, or statistics, check whether the data actually supports the conclusion the author draws from it. Sometimes the numbers are real but the interpretation is a stretch.

tl;dr

Integration of Knowledge & Ideas questions test whether you can think critically about what you read. You need to identify claims, separate facts from opinions, compare paired passages, break down how arguments are built, and judge whether the evidence actually holds up. These questions make up 13–23% of your Reading score. The best way to prepare is to practice reading paired passages and actively asking yourself: What is this author arguing, how are they supporting it, and is it convincing?

🎒ACT Review