Should You Take the Optional ACT Science Section?
Since 2025, the ACT Science section is no longer mandatory. It doesn't count toward your Composite score, and you can skip it entirely. But should you? The answer depends on your academic goals and the colleges you're targeting.
What the Science Section Tests
Despite its name, the ACT Science section is not a test of memorized biology, chemistry, or physics facts. It's primarily a data interpretation and reasoning assessment. You'll be given passages with graphs, tables, and descriptions of experiments, then asked to:
- Read and interpret data from charts and graphs
- Evaluate experimental design and methodology
- Draw conclusions from conflicting scientific viewpoints
- Identify trends and relationships in data sets
Any necessary scientific context is provided in the passage. You do not need advanced science coursework to do well.
Format and Cost
- Questions: 40
- Time: 40 minutes (60 seconds per question)
- Score: 1–36 scale (reported separately)
- Cost: $4 add-on to your registration
The STEM Score
If you take Science, the ACT also generates a STEM score — the average of your Math and Science scores, reported on a 1–36 scale. This provides colleges with a focused look at your quantitative and analytical abilities, which is valuable for STEM-focused admissions.
Who Should Take It
- Major in engineering, computer science, biology, chemistry, physics, or any STEM field
- Apply to pre-med or pre-health programs
- Apply to colleges that request or prefer the full ACT with Science
- Showcase analytical and data-reasoning skills to any program
At just $4, the Science section is a low-cost way to add a credential to your application. If you're strong at reading graphs and data, it's an easy win.
Who Can Skip It
You may reasonably skip Science if:
- You're applying exclusively to non-STEM programs (humanities, arts, social sciences)
- None of your target colleges require or recommend it
- You have concerns about test fatigue — Science adds 40 minutes to your testing day
- You've already taken the ACT and have a strong Composite from the core sections
Always Verify with Your Target Colleges
Some institutions may specifically request the Science score for STEM applicants or merit scholarship consideration. Others may not use it at all. Always check each college's admissions testing policy page directly — don't rely on assumptions.
Bottom Line
If there's any chance you'll apply to a STEM program, take the Science section. The cost is minimal, the time commitment is manageable, and having the score gives you more options. If you're certain your path is non-STEM and none of your target schools want it, you can safely skip it.