An independent referenceNo. The HP Prime is banned on ACT Math in 2026 because ACT prohibits CAS calculators and specifically lists HP Prime among prohibited Hewlett-Packard calculators.
No. The HP Prime is banned on ACT Math in 2026 because ACT prohibits CAS calculators and specifically lists HP Prime among prohibited Hewlett-Packard calculators.
HP Prime is a CAS graphing calculator and is listed by ACT among prohibited Hewlett-Packard calculators.
The ACT calculator policy allows many scientific and graphing calculators, but it prohibits calculators with CAS functionality. The HP Prime is recorded in this guide as a CAS graphing calculator, and the ACT prohibited list names HP Prime under Hewlett-Packard. That makes the verdict straightforward: the issue is not merely that the calculator has a color screen, touch interface, programming tools, or graphing capability. The issue is that HP Prime is a CAS calculator named by the official policy. This verdict is limited to ACT Math and does not approve the device through Digital ACT Desmos access, memory clearing, exam mode, deleted files, or a promise not to use symbolic algebra. For ACT planning, pick a non-CAS handheld calculator instead.
ACT prohibits calculators with built-in or downloaded CAS functionality and lists HP Prime among prohibited Hewlett-Packard calculators. The guide data classifies HP Prime as a CAS graphing calculator, so this verdict treats it as banned for ACT Math.
“Calculators with built-in or downloaded computer algebra system (CAS) functionality are prohibited.”
Do not bring the HP Prime to ACT Math as a primary calculator or backup calculator; this verdict treats it as explicitly prohibited.
Graphing calculators can be allowed on ACT, but the HP Prime is a CAS graphing calculator and falls into a prohibited category.
Do not rely on exam mode, clearing memory, disabling apps, deleting programs, or hiding symbolic features to make the HP Prime acceptable.
For Digital ACT, built-in Desmos is available in the platform, but that does not permit a separate prohibited CAS handheld calculator.
If buying used, avoid listings that call the HP Prime a generic graphing calculator without mentioning CAS; the policy issue remains.
Practice with an approved non-CAS replacement before test week so the keypad, graph window, statistics menus, and solver workflow are familiar.
Do not confuse HP Prime with allowed non-CAS graphing calculators; a polished touchscreen and exam mode do not override the named prohibited listing.
If your teacher permits HP Prime in class, treat that as classroom convenience only, not evidence that ACT test-center rules will allow it.
Before buying a substitute, compare the exact model name, CAS status, power condition, keypad layout, allowed exam page, and return window.
For online ACT, decide whether you will rely on built-in Desmos or a separate approved handheld calculator during practice, not on test morning.
If a seller advertises school approved, AP ready, engineering mode, or locked exam mode, still compare HP Prime against ACT's own prohibited list.
Build a replacement plan for graph tracing, table setup, statistics entry, zoom windows, fractions, radians, degrees, and probability before timed sections.
If a borrowed HP calculator has a touchscreen, symbolic menu, home screen algebra commands, Prime branding, geometry app, or spreadsheet app, treat it as different from approved non-CAS alternatives.
Recheck ACT's current policy near test day and follow valid proctor instructions if there is any conflict with this dated summary.
Rechargeable color graphing calculator widely used in US high school math courses.
Non-CAS color graphing calculator; distinguished from the CAS variant (TI-Nspire CX CAS) by the absence of symbolic algebra.
Color graphing calculator with programming features but no CAS capability.
No. The HP Prime is banned for ACT Math because ACT prohibits CAS calculators and lists HP Prime among prohibited Hewlett-Packard calculators.
Do not rely on exam mode for ACT approval. This verdict follows the ACT prohibited-calculator language and treats HP Prime as a banned model because of CAS functionality and the named prohibited listing.
Digital ACT testers have Desmos available in the testing platform during Math. That access does not make a separate prohibited HP Prime handheld calculator acceptable. Use Desmos or bring an approved non-CAS handheld calculator.
Choose a non-CAS calculator with an approved ACT verdict, such as the TI-84 Plus CE, TI-Nspire CX II, Casio fx-CG50, Casio fx-991CW, or TI-30XS MultiView. Check the exact model and current ACT policy before test day.
Policies change. If this file is stale or incomplete, send the exact source URL.