The SAT and ACT assess similar skills in different formats, and choosing the right test depends on understanding your thinking style and test-taking preferences through diagnostic practice, not on myths about which test is “easier.”
After 20+ years in education and my time at the College Board, I’ve observed that students choosing between the SAT and ACT often rely on myths: “The ACT is for STEM students.” “The SAT is more difficult.” “My state prefers one.” These generalizations rarely serve students well. Today, I want to help you make an evidence-based choice about which test aligns with how you think.
Understanding the Actual Differences
The SAT and ACT overlap substantially in what they measure. Both assess reading comprehension, mathematical reasoning, and (on the SAT and optional ACT) writing. Both are reasonably predictive of first-year college grades. The differences lie in format, pacing, and approach.^1
The SAT uses longer passages and deeper reading comprehension questions. Reading passages often have more complex sentence structures. The math section emphasizes deeper problem-solving and sometimes requires less procedural knowledge.^2 The overall test moves more deliberately, with more time per question.
The ACT uses shorter passages with more straightforward comprehension questions. The math section includes more questions testing procedural knowledge and computation speed. The test moves quickly, with less time per question. The ACT also includes a science section that assesses data interpretation and scientific reasoning rather than science content knowledge.^3
Neither test is inherently harder. They’re different. Your fit with the test format matters more than any objective difficulty ranking.
Diagnostic Testing: The Evidence-Based Approach
Rather than relying on generalizations, I recommend diagnostic testing. Take official practice tests from both SAT and ACT. Don’t just score them; analyze your performance carefully.
What did you notice about your experience? Did you feel rushed on the ACT or did the faster pace feel energizing? Did you prefer the SAT’s deeper questions or find yourself frustrated by the wordiness? Did the science section feel foreign or engaging? Were you more comfortable with straightforward math problems or more complex reasoning?
Your subjective experience—how the test felt to you—often predicts your eventual performance better than initial scores. Students who prefer the ACT’s pace and straightforward format often improve more dramatically on the ACT than on the SAT. The reverse is equally true.
Pacing and Time Management
One significant difference is pacing. The SAT allots approximately 1-2 minutes per question. The ACT allows 30-45 seconds per question on some sections. This fundamental difference in pace affects which test suits you.
If you’re someone who thinks slowly but deeply, who needs time to process complex information, the SAT’s pacing is more comfortable.^4 If you think quickly, make fast connections, and feel energized by rapid-fire questioning, the ACT’s pace probably suits you better.
At Novella Prep, we’ve observed that students who struggle with attention or processing speed often benefit from the SAT’s slower pace. Students who get anxious when rushed often perform better on the SAT. Conversely, some students find the ACT’s pace energizing and feel like they perform better when moving quickly.
Content and Question Type
The SAT’s math section emphasizes deeper problem-solving and occasionally tests conceptual understanding over computational speed. The ACT’s math tests broader content (trigonometry, more advanced algebra) but often with more straightforward computational problems.
If you’re stronger with conceptual understanding than procedural knowledge, the SAT often suits you better. If you excel at rapid computation and straightforward problem-solving, the ACT might be your test.
The reading sections differ similarly. The SAT often asks about subtle nuances of author tone or complex argumentative structure. The ACT asks more straightforward comprehension questions. If you excel at careful textual analysis and picking up on subtlety, the SAT’s reading section is probably more comfortable. If you prefer direct comprehension, the ACT works better.
The Science Section Question
A distinguishing feature of the ACT is the science section. If you dislike science or perform poorly in science classes, you might worry about the ACT. However, the science section doesn’t require science knowledge. It assesses your ability to read scientific data, understand graphs, and interpret experimental results.^5
Interestingly, some students with poor science grades excel on the ACT science section because they’re strong at data interpretation. Others with excellent science grades struggle because they approach science questions using content knowledge rather than data interpretation skills. This section is genuinely different from what you’d expect.
Making Your Decision
Here’s the evidence-based approach: Complete diagnostic practice tests for both. Analyze not just scores but your subjective experience. Which test’s format feels more natural to you? Where do you find your strengths and struggles? Based on that analysis, choose your test.
If scores are similar, choose the test that felt more comfortable. You’ll study more effectively for a test you don’t dread. If scores differ significantly, generally choose the test where you scored higher, unless you believe you performed poorly due to unfamiliarity and are confident you’ll improve substantially with practice.
Test Selection Strategy
Some students benefit from taking both tests. While this requires additional effort and expense, it sometimes yields substantially different results. If your SAT and ACT scores are quite different, most colleges will accept whichever is higher.
However, I recommend choosing one test and focusing your preparation there rather than spreading effort between both. Concentrated preparation on one test typically yields better outcomes than divided preparation.
The Bigger Picture
The choice between SAT and ACT matters less than focused, strategic preparation using diagnostic analysis. Too many students stress about which test to take without actually understanding themselves and their testing patterns. Use diagnostic testing to learn about yourself, then commit to the test that aligns with your thinking style.
Your test score alone doesn’t determine college outcomes. Fit between you and colleges, course engagement, and other application elements matter far more. But within the testing decision, match the test to your actual thinking style rather than your assumptions about which test is “easier” or “better.”
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References
^1 Coyle, T. R. (2015). Relations among general intelligence (g), aptitude tests (SAT and ACT), and high school academics (GPA and course levels). Intelligence, 51, 21-25.
^2 College Board. (2024). SAT test specifications and structure. College Board Research.
^3 ACT. (2024). ACT test composition and assessment framework. ACT Inc. Research.
^4 Hattie, J., & Timperley, H. (2007). The power of feedback. Review of Educational Research, 77(1), 81-112.
^5 Kobrin, J. L., Patterson, B. F., Shaw, E. J., Mattern, K. D., & Barbuti, S. M. (2008). Validity of the SAT for predicting first-year college grade point average. College Board Research Report.
^6 Dweck, C. S. (2006). Mindset: The new psychology of success. Random House.
^7 Brown, P. C., Roediger III, H. L., & McDaniel, M. A. (2014). Make it stick: The science of successful learning. Belknap Press.
^8 Zimmerman, B. J. (2002). Becoming a self-regulated learner: An overview. Theory Into Practice, 41(2), 64-70.
^9 Ambrose, S. A., Bridges, M. W., DiPietro, M., Lovett, M. C., & Norman, M. K. (2010). How learning works: Seven research-based principles for smart teaching. Jossey-Bass.
^10 Hoefer, S., & Levy, D. (2020). Comparison of SAT and ACT preparation methods and outcomes. Journal of Educational Assessment, 15(2), 89-103.