How to Study for the ACT: A 10-Week Plan for the Enhanced Test

If you are reading this in early October and haven't taken the ACT yet, you have a clean runway. The October national test's late registration closed on September 29, but the December 12, 2026 test is still open (regular registration deadline: November 6). That gives you about ten weeks — enough to make a real difference if you use them well.

This guide covers what the enhanced ACT looks like now, why the new format changes how you should practice, and a week-by-week plan to get you to test day.

What changed with the enhanced ACT

ACT rolled out a redesigned test in 2025. It became available for national online testing in April 2025, and since the September 2025 national test the enhanced version is the one you take on paper and online. If an older sibling or a prep book from 2023 is your reference, several things are different:

The key points, according to ACT's own description of the test:

• English, math and reading take 2 hours 45 minutes of testing time. Add Science and you're at 3 hours 25 minutes; add Science and Writing and it's 4 hours 5 minutes.
• Your Composite score (1–36) is based on English, math and reading. Science and Writing don't affect it. If you take Science, it feeds into your STEM score together with math.
• Math now has four answer choices instead of five.
• Some questions don't count. Each section includes embedded field-test questions that aren't scored — for example, 40 of the 50 English questions and 41 of the 45 math questions are scored. You can't tell which ones they are, so treat every question as if it counts.
• There is no penalty for guessing. Never leave an answer blank.

Should you take Science?

Look at the colleges on your list first. Some may want Science or the STEM score, especially if you're applying to engineering or other STEM programs; many won't care. If your list doesn't require it and science reasoning isn't a strength, skipping it shortens your test day and lets you put all your prep hours into the three sections that make up the Composite. If you're aiming at a STEM major, taking it gives admissions offices one more data point — as long as it's a good one.

Why the new timing matters for how you practice

The enhanced ACT gives you more time per question than the old one, but it's still a fast test. Do the math:

• English: 35 minutes for 50 questions — about 42 seconds each
• Math: 50 minutes for 45 questions — just over a minute each
• Reading: 40 minutes for 36 questions — just over a minute each, including reading the passages

That's why content knowledge alone doesn't get you a high score. Plenty of students know how to use a comma or solve a system of equations and still lose points because they spend three minutes on a hard question early in the section and rush the last ten.

Two consequences for your prep:

1. Every practice session should be timed. Untimed practice tells you what you know. Timed practice tells you what you'll score.
2. Your mistake review has to separate "didn't know" from "ran out of time" from "careless." Each one has a different fix.

Step 1: Take an official diagnostic this week

ACT offers free official practice tests, in digital and paper versions. Make sure you use one that matches the enhanced format — if a test has more questions per section than the table above, or five answer choices in math, it's the legacy version and your timing will be off.

Take it in one sitting, timed, in the format you'll use on test day (online or paper). Don't pause to look things up. The goal is a baseline, not a good score.

Then build a mistake log. For every question you got wrong or guessed on, write down:

• Section and topic (e.g., "Math — probability," "English — punctuation with commas")
• Why you missed it: didn't know the concept, misread the question, ran out of time, or careless error
• What the right reasoning was, in one sentence, in your own words

This log is the most valuable study document you'll make. It tells you exactly where your next ten weeks should go.

Step 2: The 10-week plan

This assumes about 45–60 minutes a day, five days a week, alongside school. If you have fewer hours, keep the structure and shrink the volume — a realistic schedule you actually keep beats an ambitious one you abandon in week two.

Weeks 1–2 (early to mid October): diagnose and fix the biggest gaps

• Take the diagnostic and fill in your mistake log.
• Pick the three topics costing you the most points across English, math and reading.
• Spend most of your time on those: short concept review, then 15–20 practice questions on each.
• Register for the December 12 test if you haven't. Don't let the November 6 deadline sneak up on you.

Weeks 3–4 (mid October to early November): build speed

• Switch to timed sets: one section-length block of a single section per session (e.g., 35 minutes of English).
• Keep adding to your mistake log after each set.
• Math: work out when you'll use a calculator and when it's slower than doing it by hand. Calculators are allowed only on the math section, and every problem can be solved without one. On the online test, a Desmos graphing calculator is built in — if you'll test online, practice with it.
• Reading: practice one passage at a time, timed. Notice whether you lose points on the reading itself or on the questions.

Week 5 (early November): second full practice test

• Take another full official practice test under test conditions.
• Compare with your diagnostic, section by section. What moved? What didn't?
• Update your top-three list. Some topics will have dropped off; new ones may appear.

Weeks 6–8 (November): targeted practice

• This is where most of the score gain happens. Spend 70–80% of your time on your updated weak list and the rest on mixed timed sets so you don't get rusty elsewhere.
• Revisit the questions in your mistake log without looking at your notes. If you get one wrong a second time, it stays on the list.
• Practice pacing: decide in advance how long you'll spend before moving on from a hard question, mark it, and come back at the end.

Week 9 (early December): final full test

• One last full practice test, same start time as your real test if you can manage it (a Saturday morning).
• Review it thoroughly, then do a light pass on your mistake log.

Week 10 (test week): taper

• Short sessions only: 20–30 minutes of mixed questions to stay sharp.
• Prep logistics: go through ACT's test-day checklist, check that your calculator is on the approved list (with fresh batteries), and know how to get to your test center.
• Sleep. The night before is not the time to learn a new math topic.

How to review mistakes so they don't come back

Most students check the answer, think "oh, right," and move on. That's why the same mistakes show up on the next practice test.

A better review loop:

1. Cover the explanation and redo the question. If you can't get it right on your own, you haven't learned it yet.
2. Write the rule, not the answer. "Use a semicolon only between two complete sentences" is reusable. "The answer was C" is not.
3. Test yourself on it again in a few days. Pulling something from memory is what makes it stick, not re-reading it — here's why active recall and spaced repetition work.
4. Track patterns. If half your English errors are punctuation, that's one focused topic to fix, not "English."

ACT vs. SAT prep: don't mix them up

Many students prep for both. The skills overlap, but the formats don't: the ACT is fixed-length and fast-paced, while the digital SAT is adaptive and has its own timing. If you're still deciding, take one official practice test of each and compare. If you're going the SAT route, our SAT study guide covers that test's structure and plan.

Where ExamFlow fits

Official practice tests are your benchmark, and nothing replaces them. Where students run short is the step in between: more practice on the specific topics they keep missing, and a way to keep reviewing them without redoing the same questions.

That's what ExamFlow can help with. You upload your class notes, review sheets, PDFs or photos of textbook pages, and it organizes them by topic and turns them into summaries, flashcards and practice exams — multiple choice or written answers, with AI feedback on why an answer is right or wrong. Questions you get wrong come back in later practice exams until you get them right, which is essentially the mistake log above, done for you.

It won't give you official ACT questions, and it shouldn't be your only prep. But for grammar rules, math concepts from your algebra and geometry classes, or science topics you need to shore up, it's a quick way to get more targeted practice. You can try it free, no card required.

The bottom line

• The enhanced ACT is shorter: English, math and reading make up your Composite; Science and Writing are optional.
• Register for December 12 by November 6.
• Start with an official diagnostic, keep a mistake log, and spend most of your time on your weakest topics.
• Practice timed, review every mistake properly, and take the last week easy.

Ten weeks is enough time to move your score. The students who do it aren't the ones who study the most — they're the ones who know exactly what they got wrong and fix it.