Enhanced ACT Explained: Format, Timing, Scoring, and What to Study

The ACT changed. The current version — usually called the enhanced ACT — is shorter than the test older prep books describe, math questions now have four answer choices instead of five, and science is optional. Before you buy a book or set a study schedule, confirm which version you will actually sit, because the answer depends on how and where you test.

Facts verified against ACT’s official publications on October 1–2, 2026.

Which ACT format applies to me?

ACT rolled the enhanced format out by administration channel, not on one date. As of fall 2026, every channel delivers the enhanced test — but the rollout dates explain why older advice online conflicts:

Two practical consequences. First, many older books describe the legacy test — check their section lengths and timing against the format you will take. Second, school-day students should note one more rule: whether your test includes science is decided by your school or district’s contract with ACT, not by you on test day, and science and writing are not bundled — a school can offer either one alone. Ask your counselor what your school administers.

Questions and minutes by section

Here is the standard enhanced format, from ACT’s official test overview:

The three core sections total 131 questions in 125 minutes of testing time. Adding science brings it to 171 questions in 165 minutes. These are testing minutes — nobody can promise you an exact departure time.

How scores work

Your composite is the rounded average of three section scores: English, math, and reading — each reported on the familiar 1–36 scale. Science and writing are scored and reported separately if you take them, but they are not part of the composite.

Worked example: scaled section scores of 24 (English), 27 (math), and 26 (reading) average to 77 ÷ 3 = 25.67, which rounds to a composite of 26. Notice the inputs are scaled section scores, not counts of correct answers — a percentage from a short online quiz cannot stand in for one.

If you test more than once, ACT computes a superscore automatically: your best English, best math, and best reading across all your attempts (legacy and enhanced mixed) become your Superscore Composite. Optional science and writing stay outside it. Two related scores exist for students who take the optional sections: a STEM score (only if you take science) and an ELA score (only if you take English, reading, and writing).

What changes in your preparation?

1. Pacing targets changed. You now have about 42 seconds per English question, 67 per math question, and 67 per reading question — more per question than the legacy test. Recompute any pacing plan written for the old 75/60/40-question sections before trusting it.
2. Math guessing math changed. Four answer choices instead of five means a random guess is right more often — and there is one fewer wrong option to eliminate. Practice with four-choice questions.
3. Science is a decision, not a default. Optional does not mean ignorable: some colleges and programs still recommend or require it. Check your actual target schools before deciding.
4. Old materials need an audit. Content skills transfer; timing instructions and five-choice math drills do not. And dropping science from a legacy practice test does not produce a score that predicts the enhanced test — ACT publishes no such conversion.

Where to find current practice

ACT’s own free test-prep page lists four full-length practice tests (Practice Tests 1–4, forms 25MC1, 25MC5, 26MC2, and 26MC3, each in digital and paper form) with matching scoring keys and conversion tables, plus section quizzes and a question of the day. The annual Preparing for the ACT guide includes a full-length test with self-scoring instructions; check its form number before counting it as an additional unique test. Always pair a form with its own scoring key — keys are form-specific, and using the wrong one produces a meaningless number.

Materials checklist

• My registration shows my administration type (national online / national paper / school-day / international).
• I know whether my test includes science — my choice nationally, my school’s contract for school-day.
• My main practice tests are enhanced-format official forms, each with its matching scoring key.
• Any older book is labeled “concept practice,” and I do not use its timing or scoring tables.
• My pacing plan uses 50/45/36 questions and 35/50/40 minutes.
• I checked my target colleges’ current science policies myself, with dates.
• I know my composite comes from English, math, and reading only.

Next step: take one timed official section this week, review every uncertain answer, and note whether each miss was knowledge, reading, or pacing. That pattern — not the raw count — tells you what to study next.