ACT Reading Main Idea, Craft and Comparative Passages

ACT Reading rewards three related but different reading skills inside one section. Some questions ask you to name the passage’s central point in a single sentence. Other questions ask you to explain why the author wrote a specific sentence, chose a specific word, or arranged a paragraph in a specific order. A third question type puts two passages side by side and asks you to connect them, compare them, or synthesize a claim across both texts.

Each skill maps onto a specific ACT Reading reporting category. Knowing the category tells you what the question wants before you look at the answer choices. A central-idea question and a function question about the same paragraph have different correct answers, because they ask for different work. This guide breaks down main idea and theme, structural and rhetorical analysis, and paired-passage comparison. The final section links free drills split by question type.

How These Skills Fit Into Your Reading Score

The Reading section reports three category scores alongside one overall section score, according to the official test description. Each category carries a set share of the section’s questions. Knowing the share tells you where your study time returns the most points. The table below lists each category, its weight, and what it covers.

The Reading section gives you 36 questions in 40 minutes. Passages are built from one long prose piece or from two shorter paired texts, and in a paired set, some questions involve both passages. Central-idea questions, structural questions, and paired-passage questions draw on different reporting categories, so treat them as separate skills during timed practice, not one general reading task.

Identifying the Central Theme and Purpose

A main-idea question asks you to state what the whole passage argues, shows, or explores, not what a single paragraph covers. The Key Ideas and Details category covers determining central ideas and themes and summarizing information accurately, worth 44 to 52 percent of the section's questions. This weight makes central ideas the largest single source of points in the section. The same category also covers drawing logical inferences and tracking sequential, comparative and cause-effect relationships across a passage.

Locating the Passage’s Central Claim

Read the opening and closing paragraphs closely before you work through the body. An author states or restates a central claim in one of these two spots more often than anywhere else in the passage. Underline the sentence stating the author’s overall point, then test each body paragraph against this sentence to confirm it supports the same idea.

Distinguishing the Topic From the Main Idea

A topic names the subject in a few words, for example “urban beekeeping” or “a scientist’s early career.” A main idea states what the author argues or shows about the subject, for example “urban beekeeping restores pollinator populations faster than rural programs do.” Wrong answer choices on a main-idea question often restate the topic without the author’s point, or narrow the whole-passage idea down to one paragraph’s detail.

Avoiding Answers Too Narrow or Too Broad

A main-idea answer choice failing the too-narrow test describes a single example, paragraph, or supporting detail instead of the whole passage. A choice failing the too-broad test states a claim wider than the passage supports. Test each answer choice against the full passage, not against the paragraph you read most recently.

Analyzing an Author’s Structural and Rhetorical Choices

A function question asks why the author included a sentence, paragraph, or example, not what the passage says. The Craft and Structure category covers analyzing an author’s word choice and text structure and understanding an author’s purpose and perspective, worth 26 to 33 percent of the section's questions. The same category covers determining the meaning of words and phrases in context, the skill tested directly by vocabulary-in-context questions. Answer these questions by naming the job a piece of text does inside the passage, then matching your wording against the four choices.

Function Questions: Why a Sentence or Paragraph Exists

A function question names a specific spot in the passage and asks for its role in the larger piece. Common roles include introducing a counterargument, supporting a claim with an example, shifting the passage from one idea to a related one, or setting up a contrast the author develops later. Name the role in your own words before you scan the answer choices.

Word Choice and Its Effect on Tone

A rhetorical word-choice question asks why the author picked one specific word over a more neutral option. The category covers analyzing an author’s word choice rhetorically. An author choosing “squandered” instead of “spent” signals disapproval. An author choosing “endured” instead of “experienced” signals hardship. Name the tone the word choice creates before you check the answer choices.

Author’s Purpose and Perspective

A purpose question asks why the author wrote the passage: to inform, to persuade, to entertain, or to reflect on a personal experience. A perspective question asks how the author or narrator views the subject, and whether this view stays consistent or shifts across the passage. The category also covers analyzing characters’ points of view in a passage built around more than one character or narrator.

Comparing and Contrasting Paired Passages

At least one part of the Reading section pairs two shorter texts instead of running as one long piece, according to the official test description. The official ACT practice test shows the format in use: its Reading test runs Passage I, Passage II and Passage III, and Passage III is the paired set, with a Passage A and a Passage B from two separate authors. In a passage built this way, some questions ask about a single one of the two texts, while other questions ask about both texts together. Treat the pair as two passages sharing one question set, not as one long passage with a break in the middle.

How a Paired-Passage Set Is Built

Passage A and Passage B address a shared general topic from two separate angles. Some questions test your understanding of Passage A alone, some test Passage B alone, and the remaining questions test how the two passages relate to each other. Relationship questions ask where the authors agree, where they disagree, or which part of the shared topic each author leaves out. Read every question stem for the passage label first, because an answer choice describing Passage A often sounds correct for a Passage B question.

A Reading Order for Paired-Passage Sets

Work a paired set in a fixed order so the two texts stay separate in your memory. Mixing a claim from one passage into an answer about the other is the common failure point in this question type. Follow the four steps below.

1. Read Passage A from start to finish.
2. Answer every question tied only to Passage A.
3. Read Passage B from start to finish, then answer every question tied only to Passage B.
4. Answer the questions covering both passages last, with each text still fresh.

Synthesizing Across Two Texts

Integration of Knowledge and Ideas questions ask you to move past a single passage’s claims and connect them to a second passage or a graphic. The Integration of Knowledge and Ideas category covers understanding an author’s claims, differentiating fact from opinion, and using evidence to connect two texts related by topic, worth 19 to 26 percent of the section's questions. Some questions in the category also ask you to analyze how an author builds an argument and to evaluate reasoning across sources. This is the smallest category by weight, so drill it after main idea and structural questions feel automatic.

Comparing Claims Across Two Passages

A synthesis question asks whether the two authors agree, disagree, or address different parts of a shared subject entirely. Name each author’s core claim separately before you look for overlap or conflict between them. The category also covers analyzing how an author builds an argument and evaluating reasoning or evidence across sources, so a strong answer often traces which passage supplies the stronger evidence for a shared claim.

Separating Fact From Opinion Across Sources

A fact states something you verify independent of the author’s viewpoint. An opinion states a judgment the author reaches on the subject. The category asks you to differentiate facts from opinions, so check every claim in a comparative answer choice against the passage stating it, not against the passage it sounds like it belongs to.

Interpreting a Graph, Figure or Table With the Passage

One Reading passage sometimes comes with a graph, figure or table connected to the reading task, and some questions ask you to interpret this display alongside the prose. Treat the display like a third source of evidence. Locate the exact data point the question names, then match it against the passage’s claim about the identical data before you pick an answer. Wrong choices in this question type often describe a real trend in the display and attach it to a claim the passage never makes.

Practice Main Idea, Structural and Comparative Questions

Reading a strategy moves you forward. Speed and accuracy under a timer come from practice against real questions, one skill at a time. Work a single question type until your accuracy holds steady, then switch to the next one. Mixed practice earns its place once each skill stands on its own.

Our free drills split practice by question type: the Main Idea & Theme drill, the Function & Craft drill, and the Comparative Reading drill. Every set runs free with an explanation after each question, and no signup is required. For the other Reading question types and the full section format, read our ACT Reading section guide. For full-length practice under the timed clock, use our ACT exam page.

Sources

Every number, weight and category description above comes from the official ACT pages listed below. Use them to confirm the current Reading format before test day. The practice test also gives you a full official Reading section to work through.

• ACT: Preparing for the ACT (2025-2026)
• ACT: Description of the Reading Test
• ACT: The ACT Test for Students (Enhanced ACT)