While ACT has long banned the use of CAS (computer algebra system) calculators on its exams, the College Board's calculator policy has historically been less restrictive, allowing students to use CAS calculators on the SAT and PSAT. However, those days are no more.
Starting in May 2025, the College Board has prohibited the use of CAS calculators on its exams, too. So, if you're preparing to take the SAT in the coming months, be sure to double-check that you're still using an approved calculator, even if you're using one you've used before!
How do you know if you have a CAS calculator?
There are a few ways to identify whether your calculator is a 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 can you bring to 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 does the new College Board calculator policy mean for you?
If you've been practicing using a CAS calculator and had planned to use one on your next SAT, be sure to start practicing with a new calculator now. Keep in mind, too, that you will 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.
Check out our blog to learn about various ways to use Desmos to solve SAT math problems. And, if you're working with a tutor, be sure to ask about Desmos tips and tricks. You still have plenty of calculating power available to you on the SAT!
Need more individualized advice?
The recommendations above are general suggestions. If you have specific questions, reach out to our experts here. We’re happy to help in any way we can.
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