The ACT has introduced a significant change: the Science section is now optional. This update gives students more flexibility, but it also raises important questions about strategy, college admissions, and score optimization.
Should you take the Science section? How does it affect your composite score? What do colleges actually want to see?
This guide breaks down everything you need to know about the optional ACT Science section — and how ACT Radar can help you make the best decision for your goals.
What Changed: Understanding the New ACT Format
Starting in 2025, the ACT offers two testing options:
- Full ACT: English, Math, Reading, and Science (4 sections)
- ACT without Science: English, Math, and Reading (3 sections)
This change reflects a shift toward flexibility and recognizes that not all students need to demonstrate science reasoning skills for their intended majors or career paths.
But here's the key question: Which option should you choose?
Should You Take the Science Section? Key Factors to Consider
1. Your Intended Major and Career Path
If you're planning to pursue:
- STEM fields (Science, Technology, Engineering, Mathematics)
- Pre-med or health sciences
- Natural sciences (biology, chemistry, physics)
- Engineering programs
→ You should take the Science section.
Many STEM-focused colleges and programs still value or require a strong Science score as evidence of scientific reasoning ability.
2. Your Science Section Performance
This is where ACT Radar becomes invaluable. ACT Radar's AI analysis can:
- Predict your likely Science score based on practice performance
- Show whether Science helps or hurts your composite score
- Identify if Science is a strength or weakness
If Science consistently boosts your composite score, include it. If it's dragging you down, consider skipping it.
3. Target College Requirements
Research your target colleges:
- Do they require Science scores?
- Do they prefer full ACT scores?
- How do they view optional sections?
Some colleges may still prefer or require the full ACT, especially competitive programs.
4. Time and Energy Management
The Science section adds 35 minutes and 40 questions to your test day. If:
- You struggle with time management
- Science drains your mental energy
- You perform better on shorter tests
→ Skipping Science might help you perform better on the other three sections.
How Score Calculation Works: With vs. Without Science
Understanding how your composite score changes is crucial:
Full ACT (With Science)
Composite Score = Average of English, Math, Reading, and Science
Example: English: 28, Math: 30, Reading: 27, Science: 25
Composite = (28 + 30 + 27 + 25) ÷ 4 = 27.5 → 28
ACT Without Science
Composite Score = Average of English, Math, and Reading
Example: English: 28, Math: 30, Reading: 27
Composite = (28 + 30 + 27) ÷ 3 = 28.3 → 28
Key Insight:
If your Science score is lower than your average on the other three sections, skipping Science can raise your composite score. If Science is a strength, including it can boost your composite.
How ACT Radar Helps You Decide: Data-Driven Science Section Strategy
Making this decision shouldn't be guesswork. ACT Radar's AI-powered analysis provides clarity:
1. Score Impact Prediction
ACT Radar analyzes your practice test performance to predict:
- Your likely Science section score
- How Science affects your composite score
- Whether including Science helps or hurts your overall performance
2. Performance Pattern Analysis
ACT Radar identifies:
- If Science is consistently your weakest section
- If Science performance varies significantly
- Time management issues specific to Science
3. Personalized Recommendations
Based on your data, ACT Radar recommends:
- Whether to take or skip Science
- How much improvement is possible if you focus on Science
- Optimal test-taking strategy for your profile
No more guessing. Just data-driven decisions.
Pros and Cons: Taking vs. Skipping Science
Taking the Science Section
Pros:
- Shows scientific reasoning ability (important for STEM majors)
- Demonstrates well-rounded academic skills
- May be preferred or required by some colleges
- Can boost composite if Science is a strength
- More complete academic profile
Cons:
- Adds 35 minutes of testing time
- Can lower composite if Science is weak
- More mental fatigue on test day
- Requires additional preparation time
Skipping the Science Section
Pros:
- Shorter test day (less fatigue)
- Can raise composite if Science was dragging you down
- More time to focus on English, Math, and Reading
- Less overall preparation required
- Reduced test anxiety
Cons:
- May limit options for STEM-focused programs
- Some colleges may prefer full ACT scores
- Less comprehensive academic profile
- Can't demonstrate science reasoning skills
What Colleges Are Saying: Admissions Perspective
College admissions offices are adapting to this change, but perspectives vary:
Colleges That May Prefer Full ACT
- Highly competitive STEM programs
- Research universities with strong science programs
- Pre-med and health science programs
- Engineering schools
Colleges Accepting ACT Without Science
- Liberal arts colleges (especially for non-STEM majors)
- Business and humanities programs
- Colleges emphasizing holistic admissions
- Programs that don't require scientific reasoning
Bottom line: Research your target colleges. Check their websites, contact admissions offices, and understand their specific preferences.
Making Your Decision: A Step-by-Step Guide
Step 1: Assess Your Goals
Ask yourself:
- What's your intended major?
- What colleges are you targeting?
- Do you need to demonstrate science skills?
Step 2: Use ACT Radar to Analyze Performance
Let ACT Radar analyze your practice tests to see:
- Your Science section performance trends
- How Science affects your composite score
- Predicted score impact of including/excluding Science
Step 3: Research College Requirements
Check each target college's:
- ACT score requirements
- Preferences for full vs. partial ACT
- Major-specific requirements
Step 4: Consider Test Day Factors
Think about:
- Your stamina and focus
- Time management abilities
- Mental energy levels
Step 5: Make an Informed Decision
Combine all factors to decide what's best for your unique situation.
Preparation Strategy: Whether You Take Science or Not
If You're Taking Science
Use ACT Radar to:
- Identify high-yield Science topics
- Focus on graph and data interpretation skills
- Practice experimental design questions
- Improve time management for Science section
If You're Skipping Science
Use the extra time to:
- Strengthen English, Math, and Reading scores
- Focus on your weakest of the three sections
- Improve time management on remaining sections
- Build confidence and reduce test anxiety
Either way, ACT Radar helps you optimize your preparation strategy.
Common Questions About the Optional Science Section
Q: Can I take Science on one test date and skip it on another?
A: Yes. You can choose different formats for different test dates. This flexibility allows you to experiment and see which format works better for you.
Q: Will colleges know I skipped Science?
A: Yes. Your score report will indicate whether you took the full ACT or the ACT without Science. Colleges will see this information.
Q: Can I change my mind on test day?
A: You must decide before registering for the test. You cannot change your format choice on test day.
Q: Does skipping Science affect scholarships?
A: It depends on the scholarship. Some scholarships may require full ACT scores, while others may accept either format. Check specific scholarship requirements.
Q: Is the Science section easier or harder than before?
A: The content and difficulty remain the same. The only change is that it's now optional.
Final Recommendations: Making the Right Choice
There's no one-size-fits-all answer. Your decision should be based on:
- Your academic goals and intended major
- Your performance on Science vs. other sections
- Target college requirements and preferences
- Your test-taking strengths and weaknesses
The best approach: Use ACT Radar to analyze your performance data, research your target colleges, and make an informed decision that maximizes your score and aligns with your goals.
Remember: The right choice is the one that helps you achieve your college admission goals.
Make an Informed Decision with ACT Radar
Don't guess whether to take the Science section. Let ACT Radar's AI analysis show you exactly how Science affects your score and help you make the best decision for your goals.
📊 Score impact prediction
🎯 Personalized recommendations
📈 Performance pattern analysis