New 2025 Calculator Rules: CAS Banned for SAT & PSAT (Model List)
New 2025 Calculator Rules: CAS Banned for SAT & PSAT (Model List)
New 2025 Calculator Rules: CAS Banned for SAT & PSAT (Model List)
Test Prep
Test Prep
3 minutes
3 minutes
Sep 4, 2025
Sep 4, 2025
The SAT calculator policy 2025 and PSAT calculator policy now ban CAS (Computer Algebra System) calculators. Use non-CAS graphing or scientific models, or the built-in Desmos in Bluebook. Prep with the Bluebook testing tools and the Digital SAT guide
The SAT calculator policy 2025 and PSAT calculator policy now ban CAS (Computer Algebra System) calculators. Use non-CAS graphing or scientific models, or the built-in Desmos in Bluebook. Prep with the Bluebook testing tools and the Digital SAT guide
The SAT calculator policy 2025 and PSAT calculator policy now ban CAS (Computer Algebra System) calculators. Use non-CAS graphing or scientific models, or the built-in Desmos in Bluebook. Prep with the Bluebook testing tools and the Digital SAT guide
New for 2025: CAS Is Out - What That Means for You?
New for 2025: CAS Is Out - What That Means for You?
New for 2025: CAS Is Out - What That Means for You?
“CAS” calculators can do symbolic algebra for you (solve for x, factor polynomials, differentiate symbolically, return exact forms like √2 instead of decimals, etc.). Because that crosses into “the calculator doing the math,” CAS is banned for both the SAT and PSAT/NMSQT.
What you can bring?
A non-CAS graphing calculator (e.g., most TI-84 Plus family, Casio fx-9750/9860, etc.).
A scientific calculator (Casio fx-991/ClassWiz series, TI-30 series, etc.).
Or no handheld at all and use Bluebook’s built-in Desmos.
What you cannot bring?
Any model that includes CAS (often says “CAS” right on the device/model name-e.g., TI-Nspire CX II CAS).
Devices with letter keyboards, algebra system add-ons, or computer-like features (Bluetooth, QWERTY, installable apps not locked down, etc.).
Already own a CAS?
Bring a non-CAS backup. Exam/Press-to-Test modes on CAS models do not make a CAS device allowed a CAS is still a CAS.
Why the rule?
The SAT/PSAT are designed to measure reasoning and setup, not whether your device can do algebra for you. Non-CAS calculators and Bluebook/Desmos give you numeric and graphing support without automating the core math.
Allowed vs Not Allowed (model table)
Category | Allowed? | Examples / Notes |
|---|---|---|
Four-function (no algebra features) | Yes | Basic four-function models. |
Scientific (no CAS) | Yes | Casio fx-991EX, TI-30XS, HP 35s. |
Graphing (non-CAS) | Yes | TI-84 Plus / Plus CE; Casio fx-9750GIII, fx-9860GII. |
Graphing with CAS | No | TI-Nspire CAS models, TI-89 Titanium, HP Prime CAS. |
Phones/tablets/watches | No | Any device with apps/messaging. |
Keyboards or comms features | No | Bluetooth, QWERTY, external keyboards. |
“CAS” calculators can do symbolic algebra for you (solve for x, factor polynomials, differentiate symbolically, return exact forms like √2 instead of decimals, etc.). Because that crosses into “the calculator doing the math,” CAS is banned for both the SAT and PSAT/NMSQT.
What you can bring?
A non-CAS graphing calculator (e.g., most TI-84 Plus family, Casio fx-9750/9860, etc.).
A scientific calculator (Casio fx-991/ClassWiz series, TI-30 series, etc.).
Or no handheld at all and use Bluebook’s built-in Desmos.
What you cannot bring?
Any model that includes CAS (often says “CAS” right on the device/model name-e.g., TI-Nspire CX II CAS).
Devices with letter keyboards, algebra system add-ons, or computer-like features (Bluetooth, QWERTY, installable apps not locked down, etc.).
Already own a CAS?
Bring a non-CAS backup. Exam/Press-to-Test modes on CAS models do not make a CAS device allowed a CAS is still a CAS.
Why the rule?
The SAT/PSAT are designed to measure reasoning and setup, not whether your device can do algebra for you. Non-CAS calculators and Bluebook/Desmos give you numeric and graphing support without automating the core math.
Allowed vs Not Allowed (model table)
Category | Allowed? | Examples / Notes |
|---|---|---|
Four-function (no algebra features) | Yes | Basic four-function models. |
Scientific (no CAS) | Yes | Casio fx-991EX, TI-30XS, HP 35s. |
Graphing (non-CAS) | Yes | TI-84 Plus / Plus CE; Casio fx-9750GIII, fx-9860GII. |
Graphing with CAS | No | TI-Nspire CAS models, TI-89 Titanium, HP Prime CAS. |
Phones/tablets/watches | No | Any device with apps/messaging. |
Keyboards or comms features | No | Bluetooth, QWERTY, external keyboards. |
“CAS” calculators can do symbolic algebra for you (solve for x, factor polynomials, differentiate symbolically, return exact forms like √2 instead of decimals, etc.). Because that crosses into “the calculator doing the math,” CAS is banned for both the SAT and PSAT/NMSQT.
What you can bring?
A non-CAS graphing calculator (e.g., most TI-84 Plus family, Casio fx-9750/9860, etc.).
A scientific calculator (Casio fx-991/ClassWiz series, TI-30 series, etc.).
Or no handheld at all and use Bluebook’s built-in Desmos.
What you cannot bring?
Any model that includes CAS (often says “CAS” right on the device/model name-e.g., TI-Nspire CX II CAS).
Devices with letter keyboards, algebra system add-ons, or computer-like features (Bluetooth, QWERTY, installable apps not locked down, etc.).
Already own a CAS?
Bring a non-CAS backup. Exam/Press-to-Test modes on CAS models do not make a CAS device allowed a CAS is still a CAS.
Why the rule?
The SAT/PSAT are designed to measure reasoning and setup, not whether your device can do algebra for you. Non-CAS calculators and Bluebook/Desmos give you numeric and graphing support without automating the core math.
Allowed vs Not Allowed (model table)
Category | Allowed? | Examples / Notes |
|---|---|---|
Four-function (no algebra features) | Yes | Basic four-function models. |
Scientific (no CAS) | Yes | Casio fx-991EX, TI-30XS, HP 35s. |
Graphing (non-CAS) | Yes | TI-84 Plus / Plus CE; Casio fx-9750GIII, fx-9860GII. |
Graphing with CAS | No | TI-Nspire CAS models, TI-89 Titanium, HP Prime CAS. |
Phones/tablets/watches | No | Any device with apps/messaging. |
Keyboards or comms features | No | Bluetooth, QWERTY, external keyboards. |
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Spot a CAS in 10 Seconds (Red Flags)
Spot a CAS in 10 Seconds (Red Flags)
Spot a CAS in 10 Seconds (Red Flags)
Use these quick checks to avoid bringing a banned device:
The model name literally says “CAS.”
The calculator can do symbolic tasks:
solve(x^2-5x+6=0)returning (x−2)(x−3), exact radicals, or symbolic derivatives liked/dx(sin x)=cos x.It offers algebra system menus: algebra → factor/simplify/expand, solve system by symbols, partial fractions, or integral/derivative with exact forms.
It has a QWERTY keyboard, Bluetooth, USB mass-storage apps, or looks/acts like a tiny computer.
Marketing phrases like “Computer Algebra,” “symbolic algebra,” “exact simplification,” or “CAS engine.”
“Exam mode” lights don’t help here-if the base model is CAS, it remains not allowed.
Tip: When in doubt, search the exact model name + “CAS” on the manufacturer site. If it’s CAS-enabled, leave it at home.
Use these quick checks to avoid bringing a banned device:
The model name literally says “CAS.”
The calculator can do symbolic tasks:
solve(x^2-5x+6=0)returning (x−2)(x−3), exact radicals, or symbolic derivatives liked/dx(sin x)=cos x.It offers algebra system menus: algebra → factor/simplify/expand, solve system by symbols, partial fractions, or integral/derivative with exact forms.
It has a QWERTY keyboard, Bluetooth, USB mass-storage apps, or looks/acts like a tiny computer.
Marketing phrases like “Computer Algebra,” “symbolic algebra,” “exact simplification,” or “CAS engine.”
“Exam mode” lights don’t help here-if the base model is CAS, it remains not allowed.
Tip: When in doubt, search the exact model name + “CAS” on the manufacturer site. If it’s CAS-enabled, leave it at home.
Use these quick checks to avoid bringing a banned device:
The model name literally says “CAS.”
The calculator can do symbolic tasks:
solve(x^2-5x+6=0)returning (x−2)(x−3), exact radicals, or symbolic derivatives liked/dx(sin x)=cos x.It offers algebra system menus: algebra → factor/simplify/expand, solve system by symbols, partial fractions, or integral/derivative with exact forms.
It has a QWERTY keyboard, Bluetooth, USB mass-storage apps, or looks/acts like a tiny computer.
Marketing phrases like “Computer Algebra,” “symbolic algebra,” “exact simplification,” or “CAS engine.”
“Exam mode” lights don’t help here-if the base model is CAS, it remains not allowed.
Tip: When in doubt, search the exact model name + “CAS” on the manufacturer site. If it’s CAS-enabled, leave it at home.
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Bluebook Desmos = Your Built-In Graphing Calculator (Use It Well)
Bluebook Desmos = Your Built-In Graphing Calculator (Use It Well)
Bluebook Desmos = Your Built-In Graphing Calculator (Use It Well)
Every Math section in Bluebook includes Desmos. It’s powerful, fast, and removes the “which model is allowed?” stress.
What it’s great at
Graphing functions, inequalities, and systems; trace, intersections, tables.
Numeric work (decimals) and visuals that speed up reasoning.
Clean handling of transformations and parameter testing.
What it won’t do
Symbolic algebra (no CAS). You still set up the math; Desmos helps you check and visualize.
Practice plan (15 minutes to confidence)
Open Bluebook on your device and try a practice set so the Desmos layout feels natural.
Practice typing common forms you’ll see: linear, quadratics, exponentials; use table of values, zoom, and trace.
Learn one workflow for each problem type, e.g.,
Line from two points? Enter
y=mx+b, use two-point slope, graph to confirm.Quadratic roots? Graph
y=0and the quadratic; read x-intercepts.System of equations? Graph both; take the intersection.
Know when to not graph: mental math/number properties are faster on many problems.
Test-room etiquette
Keep your hands on the testing app only (no switching).
Use provided scratch paper for setups; check with Desmos when helpful.
If something freezes, raise your hand don’t troubleshoot on your own.
Every Math section in Bluebook includes Desmos. It’s powerful, fast, and removes the “which model is allowed?” stress.
What it’s great at
Graphing functions, inequalities, and systems; trace, intersections, tables.
Numeric work (decimals) and visuals that speed up reasoning.
Clean handling of transformations and parameter testing.
What it won’t do
Symbolic algebra (no CAS). You still set up the math; Desmos helps you check and visualize.
Practice plan (15 minutes to confidence)
Open Bluebook on your device and try a practice set so the Desmos layout feels natural.
Practice typing common forms you’ll see: linear, quadratics, exponentials; use table of values, zoom, and trace.
Learn one workflow for each problem type, e.g.,
Line from two points? Enter
y=mx+b, use two-point slope, graph to confirm.Quadratic roots? Graph
y=0and the quadratic; read x-intercepts.System of equations? Graph both; take the intersection.
Know when to not graph: mental math/number properties are faster on many problems.
Test-room etiquette
Keep your hands on the testing app only (no switching).
Use provided scratch paper for setups; check with Desmos when helpful.
If something freezes, raise your hand don’t troubleshoot on your own.
Every Math section in Bluebook includes Desmos. It’s powerful, fast, and removes the “which model is allowed?” stress.
What it’s great at
Graphing functions, inequalities, and systems; trace, intersections, tables.
Numeric work (decimals) and visuals that speed up reasoning.
Clean handling of transformations and parameter testing.
What it won’t do
Symbolic algebra (no CAS). You still set up the math; Desmos helps you check and visualize.
Practice plan (15 minutes to confidence)
Open Bluebook on your device and try a practice set so the Desmos layout feels natural.
Practice typing common forms you’ll see: linear, quadratics, exponentials; use table of values, zoom, and trace.
Learn one workflow for each problem type, e.g.,
Line from two points? Enter
y=mx+b, use two-point slope, graph to confirm.Quadratic roots? Graph
y=0and the quadratic; read x-intercepts.System of equations? Graph both; take the intersection.
Know when to not graph: mental math/number properties are faster on many problems.
Test-room etiquette
Keep your hands on the testing app only (no switching).
Use provided scratch paper for setups; check with Desmos when helpful.
If something freezes, raise your hand don’t troubleshoot on your own.
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Walk-In Ready: Calculator & Device Final Checks
Choose your tool
Bring one non-CAS graphing or scientific calculator you already know.
Pack fresh batteries (or a full charge if rechargeable) and label your device.
If you’re nervous, bring a $15 scientific as a backup (if your school allows spares).
Configure it
Set Degree mode (most SAT/PSAT items use degrees).
Clear memory/history if your proctor asks.
Turn beeps/alarms off.
Phone & wearables
Power off phones and store them as your school instructs. Smartwatches and wearables are not allowed.
Bluebook device
Install/update Bluebook the day before, restart, and charge to 100%.
Pack your charger. Enable Do Not Disturb/Focus and close background apps.
Final reality check
If your calculator has CAS, leave it at home.
If you’re unsure, use a simple scientific and lean on Bluebook Desmos you’ll be fully covered.
Walk-In Ready: Calculator & Device Final Checks
Choose your tool
Bring one non-CAS graphing or scientific calculator you already know.
Pack fresh batteries (or a full charge if rechargeable) and label your device.
If you’re nervous, bring a $15 scientific as a backup (if your school allows spares).
Configure it
Set Degree mode (most SAT/PSAT items use degrees).
Clear memory/history if your proctor asks.
Turn beeps/alarms off.
Phone & wearables
Power off phones and store them as your school instructs. Smartwatches and wearables are not allowed.
Bluebook device
Install/update Bluebook the day before, restart, and charge to 100%.
Pack your charger. Enable Do Not Disturb/Focus and close background apps.
Final reality check
If your calculator has CAS, leave it at home.
If you’re unsure, use a simple scientific and lean on Bluebook Desmos you’ll be fully covered.
Walk-In Ready: Calculator & Device Final Checks
Choose your tool
Bring one non-CAS graphing or scientific calculator you already know.
Pack fresh batteries (or a full charge if rechargeable) and label your device.
If you’re nervous, bring a $15 scientific as a backup (if your school allows spares).
Configure it
Set Degree mode (most SAT/PSAT items use degrees).
Clear memory/history if your proctor asks.
Turn beeps/alarms off.
Phone & wearables
Power off phones and store them as your school instructs. Smartwatches and wearables are not allowed.
Bluebook device
Install/update Bluebook the day before, restart, and charge to 100%.
Pack your charger. Enable Do Not Disturb/Focus and close background apps.
Final reality check
If your calculator has CAS, leave it at home.
If you’re unsure, use a simple scientific and lean on Bluebook Desmos you’ll be fully covered.
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Solutions
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© 2024 All rights reserved LearnQ Inc.