US Students
District Testing
Test Day Policies
ACT Calculator Policy
Calculators are allowed only on the mathematics test (including ACT® WorkKeys® Applied Math), and all problems may be solved without one.
Sharing calculators during the test is not permitted.
Approved Calculators
You must bring your own permitted calculator. Testing staff do not provide them.
4-function, scientific, and graphing models are allowed unless prohibited and must be modified if required (see below). Accessible calculators (audio/"talking" or Braille) require prior approval.
4-Function Calculators
Four-function, or "basic" calculators are designed with four main functions: addition, subtraction, multiplication, and division. Some basic calculators may include additional functions such as square roots and percentages.
Graphing Calculators
Graphing calculators offer capabilities such as plotting graphs, analyzing data, and performing complex mathematical functions like trigonometry and logarithms.
Scientific Calculators
Scientific calculators are equipped with advanced functions necessary for solving high-level math, science, and engineering problems. Some of these features include scientific notation, statistical and probability functions, built-in memory, and much more.
Modifications Needed for Certain Calculators
 Calculators that can hold programs or documents: Remove all documents and remove all programs with CAS functionality. |
| Calculators with paper tape: Remove the tape. |
| Calculators that make noise: Turn off the sound. |
| Calculators with an infrared data port: Completely cover the port with heavy opaque material (e.g., duct tape). |
| Calculators with power cords: Remove all power/electrical cords |
Prohibited Calculators
Calculators with built-in or downloaded computer algebra system (CAS) functionality are prohibited, including:
Texas Instruments
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All model numbers beginning with TI-89 or TI-92 |
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TI-Nspire CAS |
Note: TI-Nspire (non-CAS) is permitted.
Hewlett-Packard
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HP Prime |
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HP 48GII |
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All HP 40G, HP 49G, or HP 50G models |
Casio
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fx-CP400 (ClassPad 400) |
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ClassPad 300/ClassPad m330 |
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Algebra fx 2.0 |
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All CFX-997OG models |
Note: Examinees who break the calculator policy will be dismissed for prohibited behavior.
Learn more about computer algebra system (CAS) calculators.
Other Devices Not Permitted
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Handheld, tablet, or laptop computers (including PDAs) |
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Calcuators built into cell phones or electronic communication devices |
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Electronic writing pads or pen-input devices (Sharp EL 9600 is permitted) |
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Calculators with QWERTY format letter keys (non-QWERTY are OK) |
ACT Calculator Tips
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Check to make sure you're using a permitted calculator. | |
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Make sure your calculator is working and fully charged or has reliable batteries. | |
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Bring a backup calculator and/or extra batteries. | |
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Examinees are encouraged to use a familiar calculator, but all problems may be solved without a calculator. | |
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Use your calculator strategically - solve simple calculations by hand to save time. |
Computer-Based Testing
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An on-screen calculator is available. | |
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Desmos on-screen calculator is available. | |
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Calculators may not be connected to the testing device. |
Testing Staff Responsibilities
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Monitor examinees to ensure only permitted calculators are used. | |
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Dismiss any examinee using a prohibited calculator. |
Learn More About Test Day
Know more about what to bring and what to expect on test day.