The ACT Science section has officially become optional, but how colleges treat it isn’t uniform and depends on each institution’s admissions policies. Here’s a clear breakdown of what’s happening and what colleges generally do:
What Changed with the ACT Science Section:
Science Is Now Optional on the ACT
• Starting April 2025
for online tests (and September 2025
for all formats), the ACT no longer requires
students to take the science section as part of the core exam.
• The ACT Composite score, the score most colleges look at, is now calculated only from English, Math, and Reading.
• If you take science, you’ll get a science score reported separately, along with a STEM score
if you also take math.
How Colleges View the Optional Science Section
1. Most Colleges Treat It as Optional
• Many colleges do not require the ACT science section
for general admissions, treating it similarly to the optional writing section.
• Students applying to schools that list only a composite ACT score
usually do not need a science score. But you should always check each college’s official admissions requirements.
2. Some Colleges May Prefer or Require It
• A small number of colleges or specific programs
(especially in STEM fields like engineering, biology, etc.) may still recommend or require
an ACT science score. This is similar to how some schools formerly required the optional ACT writing test.
• Example patterns from early reporting showed:
◦ Some universities (e.g., Boston University) reportedly want students to submit ACT science scores.
◦ Others (e.g., some Ivies or test-optional schools) list science as optional or not considered.
(Note: Specific college policies are evolving, so the above examples may not reflect the current status at every school.)
Practical Guidance for Students
✔ Check Requirements for Each College
• Always look at each college’s official admissions page or contact admissions directly to confirm whether they require or recommend
the optional science score.
✔ When You Should Take the Science Section
Consider taking the science section if:
• You’re applying to STEM majors
(biology, chemistry, engineering, physics, computer science, etc.).
• One of your target colleges specifically wants it.
• You feel confident that a strong science score will help your application.
✔ When You Might Skip
It
Students might skip it if:
• Your target schools don’t require or seriously consider the science score.
• You prefer a shorter test with less time studying for science.
You want to avoid dealing with an extra separate score that won’t affect your main Composite score.
ACT® is a registered trademark of the ACT Inc, which was not involved in the production of, and does not endorse, this product.