When to Take the ACT: A Practical Timeline

The direct answer: most students take the ACT for the first time in junior year, often in the fall or spring, and retake in the fall of senior year if needed. The right date depends on your coursework, your college deadlines, and how many retake windows you want. This guide maps those choices.

When to Take the ACT at a Glance

Start From Your Deadlines

Plan backwards. Early action and early decision deadlines often fall on November 1 or 15. Regular decision runs into January. Scholarship deadlines can be as early as December 1. Your last ACT should land early enough for scores to arrive first.

ACT scores release for most students about four weeks after the test 1. Build that wait into your calendar so a late date does not miss a deadline.

The Junior Year First Attempt

ACT recommends taking the test during junior or senior year, after most core coursework is complete 1. Many students choose the fall of junior year to set a baseline, then retake in the spring after more preparation. Others start in the spring and use the summer to improve.

Junior year is common because you have covered the English, math, and reading content the test assumes. You also still have senior fall as a retake window.

The Fall Junior Path

A September, October, or December test in junior year gives you an early baseline. The benefit is time: you can retake in the spring and again in senior fall if needed. The downside is that some math topics may not be covered yet, though those appear in only a handful of questions.

The Spring Junior Path

A February, April, or June test lets more coursework settle first. Spring testing leaves the summer for focused prep and the fall senior dates for a final attempt. This is the path many counselors suggest.

The Senior Fall Safety Net

If you have not hit your goal, the fall of senior year is your last comfortable window. July, September, and October dates work for most regular decision schools. December is riskier for early deadlines. Avoid booking back to back fall dates, because the score from one may arrive after the next registration closes.

Choose the Format That Fits You

On the redesigned ACT, the core exam covers English, math, and reading. Science and writing are optional 2. If you take Science, it is scored separately and does not change your Composite, which is calculated from English, math, and reading 2. Decide whether the section helps your goals before you register. The SAT offers a different structure, and our guide on when to take the SAT covers that timeline.

Should you take the optional Science section?

Take it if the schools you are applying to prefer or require it, or if you are a strong STEM student who wants to show that skill. Skip it if your target programs do not consider it and you would rather spend energy on the core sections.

Build a Prep Schedule That Matches Your Date

1. Take a timed baseline practice test three months before your first date.
2. Score it and list the question types you miss most.
3. Spend the first month on your weakest section, then a month on the next.
4. Take one more full practice test two weeks before the real date.
5. Leave the final week for light review and rest, not new material.

For the optional Science section specifically, our ACT Science practice guide explains how to train for it, and ACT vs SAT scores helps you compare the two tests if you are undecided.

Common Misconceptions

• Booking a date without checking college and scholarship deadlines.
• Waiting until senior fall with no retake room.
• Taking Science by default instead of by choice.
• Stacking two fall dates back to back.
• Skipping a baseline and preparing without a score target.

Frequently Asked Questions

When should a first time tester take the ACT?

Junior year is the common first window, in either the fall or the spring. Test once your core coursework is mostly done.

Is senior year too late to start?

It is not too late, but it limits retake options. A first attempt in senior fall can still reach regular decision schools if timed well.

How many times should I take the ACT?

Two or three total is typical. More attempts are allowed, but set a score goal so you know when to stop.

Does the optional Science section affect my Composite?

No. The Composite uses English, math, and reading. Science is reported separately and contributes to a STEM score if you take it 2.

Can I take the ACT as a sophomore?

Yes. Some students test early to gain experience or support dual enrollment plans, though coursework may not be fully covered.

How do I pick between the ACT and SAT?

Take a timed practice of each and compare the results. Our ACT vs SAT scores guide shows how the two tests line up.

SAT is a trademark of the College Board. AP is a trademark of the College Board. ACT is a trademark of ACT, Inc. StudyInk is not affiliated with or endorsed by these organizations.

Sources: [1] ACT, The ACT Test, [2] ACT, ACT Test Changes and Enhancements,