Can You Use a TI-84 on an IB Exam? GDC Rules Explained

Can you use a TI-84 on an IB exam? Usually, yes — but the answer depends on your subject, your level and your school. The IB expects a graphic display calculator (GDC) for the papers that allow one, and the TI-84 Plus family is a GDC that is widely accepted by IB schools.

Unlike the SAT, the ACT or the AP, the IB does not present a single permitted-calculator list that covers every candidate. The requirement is expressed through the subject and the school’s own arrangements, which is why two students at different centres can be told slightly different things about the same paper.

The practical consequence is that you should not rely on a general answer. You need to confirm the position for your paper with the people who run your programme, and this page explains what to ask.

What the IB expects: a graphic display calculator

The term the IB uses is graphic display calculator, or GDC. It describes a calculator that can display graphs, which is the capability the papers are written around. On the papers that allow a calculator, the IB expects a GDC rather than a basic four-function device.

That expectation shapes how you prepare. A GDC is not an optional convenience on those papers; it is the tool the questions assume. Working through practice papers without one, or with a model you do not know well, leaves you unprepared for the format you will actually sit.

Is the TI-84 Plus a GDC?

Yes. The TI-84 Plus and TI-84 Plus CE are graphing calculators, so they meet the description the IB uses. The TI-84 Plus family is a GDC widely accepted by IB schools, which is why it is such a common sight in IB classrooms.

Being a GDC is a starting point, not the whole rule. The IB also looks at what the calculator can do, particularly around symbolic algebra, so the model matters as well as the category. The next two sections cover the two variables: the subject and the capability.

Why the requirement varies: subject, level and school

Three things change the answer, and they combine.

• The subject. Some papers are written around a GDC and expect one; others are not. Mathematics and the sciences are the obvious cases, but the detail sits with each subject’s guide rather than in a general statement.
• The level. Higher Level and Standard Level papers can differ in what is assumed, so the same subject at two levels is not automatically the same requirement.
• The school’s arrangement. The IB works through your school, and your school communicates the specifics to its candidates. That is why the coordinator and the subject teacher, not a public list, are the right people to ask.

Because these three overlap, the reliable approach is to ask a specific question rather than a general one: “For my paper, is a GDC required or merely permitted, and which models are acceptable in this centre?”

CAS restrictions and why a CAS model is not always safe

The capability that most often draws a restriction is the computer algebra system, or CAS. A CAS manipulates symbols algebraically — rearranging an expression rather than only evaluating it — and CAS capabilities are restricted on some IB papers.

The instinct to bring the most powerful calculator available is therefore worth resisting. A model with a CAS is not automatically accepted everywhere a TI-84 is; on a paper where symbolic manipulation is restricted, the extra capability can put the device outside what is allowed. If you are choosing a calculator for IB use, a numeric graphing calculator such as the TI-84 Plus or TI-84 Plus CE is the conservative choice, and it is the one most IB schools already standardise on.

If you do have to change the setup of your calculator — clearing memory, resetting, or setting a specific mode — our guide to resetting a TI-84 to factory defaults covers the steps, and changing the window is worth rehearsing separately so that the settings are familiar under pressure.

Confirm with your coordinator and subject teacher

The final step is the one that matters most. Ask your IB coordinator and your subject teacher two questions before the paper:

• Is a calculator required or permitted on this paper, and is a GDC the expected type?
• Does this school require anything specific from the calculator — memory cleared, a particular mode, or a particular model?

They can give you the wording that applies to your centre, which no general summary can. If you meet an error message while practising, our TI-84 error codes list explains what the common ones mean.

The other boards work differently, and it helps to know how. Our overview of TI-84 exam rules compares the four families, and the AP calculator policy shows how a subject-by-subject approach looks. Where this page and the official IB or school wording disagree, the official wording wins.