The College Board recently announced important updates to its SAT and PSAT calculator policies. While in the past students taking these exams have been free to bring their CAS (computer algebra system) calculators, that’s no longer the case. As of May 2025, CAS calculators are prohibited on the SAT and PSAT.
So, if you’ve signed up to take the SAT in the coming months, be sure to double-check your calculator to make sure it’s still on the approved list. Even if your calculator is one that you’ve used on past SATs, it may no longer be acceptable.
How to Recognize a CAS Calculator
If you’re not sure whether your calculator is a CAS or non-CAS model, check to see whether it:
- Has “CAS” in the model name.
- Can manipulate algebraic expressions with symbols (for example, factoring and expanding).
- Can solve equations and give answers in terms of symbols, not just decimals.
If so, you have a CAS calculator.
What Calculators Are Permitted on the SAT and PSAT?
Calculators permitted by the College Board must be battery-operated, handheld models. These include:
- Most non-CAS graphing calculators
- All scientific calculators
- All four-function calculators (not recommended)
Other than CAS models, calculators that are not permitted by the College Board include:
- Any calculator in a laptop, tablet, smartphone, smartwatch, etc. other than the Desmos calculator in the Bluebook app.
- Calculators that require a power cord. Only battery-operated, handheld equipment can be used for testing.
Check out a complete list of College Board-approved calculators here.
What if You Were Planning to Use a CAS Calculator on Your Next SAT?
If you had planned to use a CAS calculator on your next SAT, be sure to start practicing with a new calculator now. Keep in mind, too, that you’ll still have access to the very powerful Desmos calculator built into the Bluebook testing platform. You may even find that some problems can be solved more easily and quickly using Desmos.
Of course, if you’re working with a tutor, be sure to ask about Desmos tips and tricks. In any case, remember that you still have plenty of calculating power available to you on the SAT!
Want to learn how our expert tutors can help you get ready for your upcoming SAT? Contact us.
