ACT Science Section Now Optional — Should You Take It?

ACT Science Is Now Optional — What Changed?

Starting with the new, shorter ACT, students can now choose whether or not to take the Science section. Your official ACT Composite score is calculated only from English, Math, and Reading. If you add Science, you'll receive a separate Science score and a STEM score, but your composite stays based on the three core sections.

This change raises a big question for most students and parents:

"If Science doesn't affect my composite, is it still worth taking?"

Like most ACT strategy decisions, the honest answer is: it depends on your goals, your target colleges, and your strengths. Let's break it down clearly so you can decide with confidence.

How the New ACT Structure Works (In Simple Terms)

Under the updated format, you can register for:

ACT (core only: English + Math + Reading)
ACT + Science
ACT + Writing
ACT + Science + Writing

Regardless of which option you choose:

Your Composite score is the average of English, Math, and Reading.
Science appears separately on your score report with its own score and contributes to a STEM score.
Colleges will see whether you took Science and how you performed, even though it doesn't change your composite.

So Science is "optional" for your composite — but not invisible on your score report.

Who Should Definitely Take the ACT Science Section

For some students, taking ACT Science is an easy "yes." You should strongly consider adding Science if:

You're interested in STEM majors (engineering, computer science, biology, pre-med, etc.).
Your target colleges highlight STEM readiness or mention Science/STEM scores in their admissions material.
You're already strong in data interpretation, graphs, and experiments and can turn Science into a strength on your application.
You want to signal academic curiosity to selective or highly competitive schools.

In these cases, skipping Science may raise questions like:

"Why didn't this student take Science if they want a STEM-heavy program?"
"Did they avoid it because it's a weak area?"

If STEM is part of your story, taking Science helps your narrative — even if it doesn't change your composite number.

Who Might Skip ACT Science — And Be Totally Fine

For other students, not taking Science may be the smarter, lower-stress move. You might consider skipping the Science section if:

You're targeting non-STEM majors (humanities, arts, some business programs) and colleges that don't emphasize STEM indicators.
You struggle heavily with graphs, charts, and experiment-based reading, and fixing Science would require a huge time investment with limited payoff.
Your core sections (English, Math, Reading) are still far from your target range and need most of your focus.
Your testing stamina is low and the extra section would drain energy from your core scores.

In those cases, forcing Science into your test plan can:

Increase overall test anxiety
Stretch your prep time thin across four sections instead of three
Distract you from the sections that actually move your composite

Optional means you can design the test around your strengths — not someone else's default plan.

How Colleges Might View the Optional Science Section

Policies will vary by school, but here's a realistic way to think about it:

STEM-focused programs may view a strong Science and STEM score as a positive signal, especially at selective colleges.
Non-STEM programs may mostly care about your composite and section breakdown in English, Reading, and Math.
Holistic review schools might use the Science score as one more data point when they see high-level interest in research, health, or engineering.

In the early years of this change, some colleges may release specific guidance (e.g., "Science recommended for STEM applicants"). Until then, a good rule of thumb is:

If your future leans toward STEM or science-heavy fields, treat ACT Science as "strongly recommended," not truly optional.

Should You Take ACT Science? A Simple 3-Step Decision Framework

Use this quick framework to make a calm, informed decision:

Step 1

List your top 5–10 target colleges and intended major.
Check if they highlight STEM readiness, science prerequisites, or emphasize data skills.

Step 2

Take a timed ACT Science practice section (or two).
Note your score, pacing, and how mentally drained you feel afterward.

Step 3

Ask: "If I invest 10 extra hours into Science vs. 10 extra hours into English/Math/Reading, where will I gain more total points?"
Choose the plan that statistically gives you the biggest net score gain.

Your time is limited. The best choice is the one that gives you the highest return on every hour of prep.

How ACT Radar Helps You Decide — and Prepare for Science If You Take It

ACT Radar is built around the same idea behind this ACT change: focus on what actually moves your score.

When it comes to Science, ACT Radar can help you:

See which Science skills matter most (graphs, conflicting viewpoints, data tables, experiment design).
Identify your personal weak patterns — for example, graph questions vs. research summaries.
Track time spent per question type so you know exactly where pacing breaks down.
Decide if Science is worth keeping in your test plan based on real practice data, not just feelings.

Instead of guessing, you get data: "Science adds value for me" or "Science is draining time with low return."

If You Decide to Take ACT Science: Smart Prep Tips

ACT Science is less about memorizing biology or chemistry and more about reading data fast under pressure. To prepare efficiently:

Practice data-heavy passages where almost every question refers to a chart or graph.
Learn to skim background text and jump quickly to figures and labels.
Train your eye to spot trends, increases/decreases, intersections, and comparisons.
Use short, frequent drills (10–15 minutes) instead of only full-length tests.
Review every mistake by asking: "Did I misread the graph, the question, or the answer choice?"

The goal isn't to become a scientist — it's to become fast and accurate with visual information.

If You Decide to Skip Science: Where to Direct Your Energy

If you choose not to take Science, don't just "save time" — reinvest that time into sections that drive your composite:

English: grammar rules, sentence structure, punctuation, concision.
Math: algebra, functions, word problems, and high-frequency geometry.
Reading: main idea, inference, and line-reference questions with strict timing.

ACT Radar can show:

Which topics in these sections are high-yield for you personally
Where small improvements generate big composite jumps
How to structure a 3-section prep plan that still beats students taking 4 sections without strategy

Skipping Science isn't "doing less" — it can mean doing more of what matters for your goals.

FAQ: ACT Science Now Optional

Does skipping ACT Science look bad to colleges?

For many non-STEM majors and schools that care mostly about composite scores, skipping Science is unlikely to hurt you. For STEM-heavy programs, it's safer — and often smarter — to take Science and show strength there.

Can a strong Science score still help me?

Yes. Even though it doesn't change your composite, a high Science and STEM score can support your application story, especially for majors that involve lab work, engineering, data, or research.

Should I take Science on my first ACT attempt?

Many students choose to include Science on an early attempt, then use the results to decide whether to keep or drop it later. Tools like ACT Radar help you analyze whether your Science performance is pulling its weight.

Does ACT Radar work if I don't take Science?

Absolutely. ACT Radar is built to optimize your entire prep journey — whether that's three sections or four. It helps you see where every extra hour of work delivers the most points.