TI-84 Exam Approval Status
The TI-84 Plus CE (non-CAS) is one of the most widely approved graphing calculators for standardized tests in the United States and internationally. As of 2025, all TI-84 Plus CE models remain fully approved for major exams.
| Exam | TI-84 Plus CE Status | Notes |
|---|---|---|
| SAT® | ✅ Approved | Non-CAS models only. Digital SAT includes built-in Desmos, but physical calcs still allowed. |
| PSAT/NMSQT® | ✅ Approved | Same policy as SAT. |
| ACT® | ✅ Approved | All non-CAS TI graphing calculators permitted. Widely recommended. |
| AP Calculus AB/BC | ✅ Approved | Graphing calculator required for certain exam sections. |
| AP Statistics | ✅ Approved | Graphing calculator strongly recommended throughout the exam. |
| AP Physics | ✅ Approved | Scientific or graphing calculator permitted. |
| IB Diploma | ✅ Approved | GDC (Graphical Display Calculator) allowed; TI-84 CE qualifies. |
| PISA / State Exams | ✅ Varies | Most state math assessments allow the TI-84. Check your specific state policy. |
For official exam policies and approved calculator lists, visit the College Board SAT calculator policy and the ACT calculator policy.
SAT Math: Calculator Tips
The digital SAT allows a calculator on all Math module questions. While the test platform provides a built-in Desmos calculator, students who bring and know the TI-84 often perform more efficiently on data and function problems.
Tip 01
Graph to Find Intersections
For "find x where f(x) = g(x)" problems, enter both functions in Y= and use 2nd + TRACE → intersect. Faster than algebra on complex functions.
Tip 02
Use GRAPH for Vertex
For quadratic vertex problems, graph the parabola and use CALC → minimum or maximum to find exact vertex coordinates.
Tip 03
Solve Equations with Zero
Move everything to one side (= 0), graph the result, and find zeros with CALC → zero. Works for linear, quadratic, and polynomial equations.
Tip 04
LinReg for Data Problems
When given a table of values and asked for a best-fit equation, enter data into L1/L2 and run STAT → LinReg. Read a, b, and r².
Tip 05
Table Feature for Patterns
Press 2nd + GRAPH (TABLE) to see a function's values at regular intervals, useful for identifying linear vs. exponential growth.
Tip 06
Store Intermediate Values
Store a computed value as a variable: press STO→ then a letter. Recall it later to avoid rounding errors on multi-step problems.
What NOT to Use the Calculator For on the SAT
Simple arithmetic, factoring polynomials, working with fractions, and applying basic algebra rules are often faster by hand. Over-reliance on the calculator slows you down. The SAT specifically includes problems designed to be harder with a calculator than without one.
ACT Math: Calculator Strategy
The ACT allows a calculator on the entire 60-question Math section. The TI-84 is one of the most recommended calculators for the ACT because students and teachers are already familiar with it.
Tip 01
Trigonometry in Degrees
Ensure your calculator is in Degree mode (not Radian) before the ACT. Press MODE and confirm the Degree setting is highlighted.
Tip 02
Graph to Identify Answers
The ACT often has "which graph matches this equation" questions. Enter the equation in Y= and compare the shape to the answer choices.
Tip 03
Quick Normal Distribution
ACT statistics questions occasionally involve normal distributions. Use 2nd + VARS → normalcdf for area under the normal curve.
Tip 04
Matrix Systems
For 2×2 or 3×3 system-of-equations problems, enter the coefficient matrix and constant vector, then use rref( for the solution in one step.
AP Calculus AB & BC
A graphing calculator is required on Parts A and B of the AP Calculus free-response section. The College Board expects four specific calculator capabilities; master these before exam day.
Skill 01
Numerical Derivative (nDeriv)
From the home screen: MATH → 8:nDeriv(. Syntax: nDeriv(f(X), X, value). Returns f′(value). Also available via CALC → dy/dx on the graph.
Skill 02
Definite Integral (fnInt)
MATH → 9:fnInt(. Syntax: fnInt(f(X), X, a, b). Returns ∫ f(x) dx from a to b. Also available as CALC → ∫f(x)dx on the graph.
Skill 03
Finding Accumulation
For "net change" problems: store the rate function in Y1, use fnInt(Y1, X, a, b). The result is the total accumulation over [a, b].
Skill 04
Finding Zeros for Critical Points
Graph f′(x) in Y1 and use CALC → zero to find all critical points of f. Always verify you have the correct window for the problem's domain.
Skill 05
Solve Differential Equations
For slope field / Euler's method problems, store the expression in Y1, then use lists L1/L2 to compute iterative approximations in sequence.
Skill 06
Storing Values Precisely
When an intermediate result will be used multiple times, store it: result STO→ A. This preserves full 14-digit precision and prevents rounding errors.
AP Statistics
The TI-84 is the standard calculator for AP Statistics. The exam expects you to use it efficiently for descriptive statistics, inference procedures, and probability distributions.
Tip 01
1-Var Stats for Summaries
Enter data in L1, then STAT → CALC → 1-Var Stats to get x̄, Sx, σx, median, quartiles, and range instantly.
Tip 02
normalcdf for Probabilities
2nd + VARS → normalcdf(lower, upper, μ, σ). Returns the probability between two x-values. Use 1E99 (or −1E99) for ∞.
Tip 03
invNorm for Cutoff Values
invNorm(p, μ, σ) returns the x-value with area p to its left. Essential for confidence interval critical values and z* calculations.
Tip 04
2-SampTTest for Inference
STAT → TESTS → 4:2-SampTTest for two-sample t-tests. Read the p-value directly. No formulas to compute manually.
Tip 05
χ²-Test for Independence
Enter the observed matrix in [A], then STAT → TESTS → C:χ²-Test. The expected counts populate matrix [B] automatically.
Tip 06
LinReg with Diagnostics
Enable DiagnosticOn first to see r and r² with every regression. Run STAT → CALC → LinReg(ax+b) with store to Y1 for the scatterplot overlay.
General Exam Tips
Before the Exam
Practice with the same calculator you'll use on exam day. Our online simulator matches the TI-84 Plus CE interface exactly. Use it for all your practice so the layout is familiar. On exam day, there should be no surprises.
Mode Settings to Verify
Before starting any exam, press MODE and confirm:
- Normal notation (not Sci or Eng) unless the exam involves scientific notation
- Float (floating decimal) for maximum precision
- Degree or Radian depending on the problem context. SAT/ACT usually Degree; AP Calculus usually Radian
- Real number mode (unless complex numbers are expected)
Reset Your Calculator
Some teachers require a calculator memory reset before exams. To reset all RAM: 2nd + + (MEM) → 7:Reset → 1:All RAM → 2:Reset. This clears all programs, lists, and stored variables.
Pre-Exam Practice Checklist
Use this checklist to verify you can perform every common exam operation on the TI-84 before your test date. Practice each skill on our free online calculator.
| Skill | How to Practice | Relevant Exams |
|---|---|---|
| Graph a function and find zeros | Y= → enter f(x) → GRAPH → CALC → zero | SAT, ACT, AP Calc |
| Find intersection of two functions | Y= → enter f and g → CALC → intersect | SAT, ACT, AP Calc |
| Evaluate a definite integral | MATH → fnInt( f(X), X, a, b ) | AP Calc |
| Compute a numerical derivative | MATH → nDeriv( f(X), X, c ) | AP Calc |
| Calculate 1-variable statistics | STAT → Edit → enter data → CALC → 1-Var | AP Stats, SAT, ACT |
| Perform linear regression | STAT → CALC → LinReg(ax+b) | AP Stats, SAT |
| Find normal distribution probability | 2nd → VARS → normalcdf(l, u, μ, σ) | AP Stats |
| Run a t-test | STAT → TESTS → T-Test or 2-SampTTest | AP Stats |
| Solve matrix system with rref | MATRIX → MATH → rref([A]) | ACT, Pre-Calc |
| Set correct angle mode | MODE → Degree or Radian | All exams |
Practice Every Skill Right Now
Open the free TI-84 Plus CE online and run through the checklist above. No download needed.