ACT Overview: How the New ACT Compares to the SAT

Picture two students with nearly identical academic profiles. One scores in the 90th percentile on the ACT; the other struggles to break the 75th percentile on the SAT. Same GPA, same classes, same college list — different test. This isn't rare. The ACT and SAT measure overlapping but not identical skills, and for a meaningful share of students, the choice of which test to take matters more than how much they study for the wrong one.

What the ACT Actually Looks Like in 2024–2025

The ACT remains primarily a paper-based exam, though an optional digital format has been available at select centers since 2023. Unlike the digital SAT — which College Board fully transitioned to in 2024 and delivers as a section-adaptive test on the Bluebook app — the ACT still delivers all questions in fixed, linear order. You get the same test regardless of how you answered the previous section.

The four required sections are:

• English — 75 questions, 45 minutes. Focuses on grammar, punctuation, sentence structure, and rhetorical strategy.
• Math — 60 questions, 60 minutes. Covers pre-algebra through trigonometry; a calculator is permitted throughout (unlike the digital SAT, which restricts calculators in one module).
• Reading — 40 questions, 35 minutes. Four passages covering literary narrative, social science, humanities, and natural science.
• Science — 40 questions, 35 minutes. Not a science knowledge test — it's data interpretation and experimental reasoning across charts, graphs, and conflicting viewpoints passages.

There's also an optional Writing section (40 minutes, one essay), scored separately on a 2–12 scale. Most colleges no longer require it, but check your specific school list before skipping it. The composite score runs from 1 to 36, averaged across the four required sections.

How the ACT Differs from the Digital SAT

The structural differences are real and they affect strategy. The digital SAT is shorter overall — roughly 2 hours 14 minutes without the optional essay (which the SAT eliminated) versus about 2 hours 55 minutes for the ACT without Writing, or 3 hours 35 minutes with it. If testing stamina is a genuine issue for you, that gap is worth weighing.

Pace is the other major factor. The ACT's Reading section gives you about 52 seconds per question. The Science section is similarly compressed. Students who read quickly and process information under time pressure often find the ACT more manageable. Students who work more methodically — double-checking steps, re-reading for nuance — sometimes prefer the SAT's relatively looser per-question pacing.

The Math sections also differ in emphasis. The digital SAT includes more data analysis and fewer pure algebra problems; the ACT's Math section reaches into trigonometry and includes more geometry than the SAT does. Neither is objectively harder — it depends on your math background.

One thing that hasn't changed: both exams are accepted at all U.S. four-year colleges, and there's no evidence that admissions officers favor one over the other.

When the ACT Might Be the Better Fit

Research on test-taker performance across both exams (including data published by Compass Education Group analyzing concordance tables) suggests that roughly 25–30% of students score meaningfully higher on one test than the other. That's a large enough gap that taking at least one full, timed practice test for each exam before committing is worth the few hours it costs.

The ACT tends to suit students who:

• Are strong in science reasoning and comfortable interpreting graphs quickly
• Prefer straightforward, direct questions over the SAT's sometimes layered phrasing
• Have solid trig and geometry preparation from school coursework
• Do well under fast-paced conditions rather than deliberate, methodical ones

That said, these are tendencies, not rules. Student performance varies enough that individual diagnostic testing beats any generalization.

If you're trying to figure out which exam to target, the most concrete next step is simple: download a free official ACT practice test from act.org and a free digital SAT practice test from Bluebook, set a timer, and score both under real conditions. Compare your percentile results, not just raw scores. That single afternoon of honest diagnostic work will tell you more than any article — including this one — can.