Calculators Allowed on the SAT
Verify your device compatibility and calculate your exam efficiency score.
Efficiency is calculated by weighting the model type (Graphing = 100, Scientific = 60) against user proficiency and prohibited features.
What are Calculators Allowed on the SAT?
Knowing which calculators allowed on the SAT are best for your test date is a critical part of your preparation. The College Board has strict guidelines regarding which electronic devices can enter the testing room. Generally, most graphing calculators, all scientific calculators, and all four-function calculators are permitted. However, devices with communication capabilities, QWERTY keyboards, or those requiring a power outlet are strictly prohibited.
Who should use this guide? High school students preparing for the SAT, parents, and tutors should all be familiar with the calculators allowed on the SAT. A common misconception is that a graphing calculator is “cheating.” In reality, the SAT is designed so that every question can be solved without a calculator, but using an approved device significantly improves speed and accuracy on the Math (Calculator) section.
Calculators Allowed on the SAT: Formula and Logical Explanation
While there isn’t a single mathematical “formula” for compatibility, we use an Efficiency Index (EI) to determine how much a calculator helps a student. The formula is as follows:
EI = (Base Power × Proficiency) – (Prohibited Penalties)
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Base Power | Inherent capability of the model type | Points | 10 (Basic) – 100 (Graphing) |
| Proficiency | Student’s familiarity with the device | Decimal | 0.1 – 1.0 |
| Prohibited Features | Features that trigger a DQ (e.g., Stylus) | Boolean | True / False |
Practical Examples of Calculators Allowed on the SAT
Example 1: The High-Acheiver
A student uses a TI-84 Plus CE (Base Power: 100) and has a proficiency of 0.9. They have no prohibited features. Their Efficiency Index is 90. This student will likely save 15-20 seconds per question on graphing problems compared to a student without a calculator.
Example 2: The Prohibited Device
A student brings a TI-92 which has a QWERTY keyboard. Despite its high mathematical power, it contains a prohibited feature. The compatibility result is “Prohibited,” and the student will not be allowed to use it during the exam, potentially leading to a massive time disadvantage or disqualification.
How to Use This Calculators Allowed on the SAT Calculator
- Select Category: Choose whether you have a graphing, scientific, or basic calculator.
- Check Features: Tick the boxes if your device has a stylus, QWERTY keyboard, or wireless functions.
- Input Proficiency: Be honest about how well you know the shortcut keys and functions.
- Analyze Results: Look at the “Approval Status” to ensure you won’t be turned away at the door.
- Review Efficiency: Aim for an efficiency score above 70% for the best competitive advantage.
Key Factors That Affect Calculators Allowed on the SAT Results
- Model Approval: The College Board maintains a specific list of calculators allowed on the SAT, particularly for graphing models.
- Keyboard Type: Any device with a laptop-style keyboard is banned to prevent typing notes or essays.
- Communication: Devices that can access the internet or send texts (like smartphones or smartwatches) are strictly forbidden.
- Screen Type: While some touchscreens are now permitted (like the Casio Prizm), generally, those requiring a stylus are not.
- Battery Life: Your device must be battery-operated; you cannot plug into a wall during the test.
- User Proficiency: A powerful calculator is useless if you don’t know how to use it. Efficiency is directly tied to your practice time.
Frequently Asked Questions (FAQ)
Yes, the TI-Nspire CX CAS is among the calculators allowed on the SAT, even though it has Computer Algebra System (CAS) functionality.
Scientific calculators are lighter and cheaper, but graphing calculators provide a visual advantage for coordinate geometry and functions.
If it is a graphing calculator not on the specific list, it is prohibited. If it is scientific or 4-function, it is generally okay unless it has prohibited features.
Yes, you can bring a backup from the list of calculators allowed on the SAT, but you can only have one on your desk at a time.
Yes, this is a popular graphing calculator allowed on the SAT math section.
While not always strictly enforced, proctors may ask you to clear your RAM or reset the device before the test starts.
No. You must keep your calculators allowed on the SAT under your desk during the non-calculator portion.
Absolutely not. No smartphones, tablets, or apps are permitted in the testing room.
Related Tools and Internal Resources
- SAT Calculator Policy: Full breakdown of official College Board rules.
- Best SAT Graphing Calculators: Reviews of the top 5 allowed devices.
- College Board Approved Devices: The ultimate list for all standardized tests.
- SAT Math Prep: Strategies for both calculator sections.
- Scientific Calculators for SAT: Why they might be better for some students.
- Calculator Features for SAT: What to look for when buying a new device.