Texas Instruments TI-Nspire CX CAS Exam Calculator Rules

Based on the cited policy quote, the relevant evidence is the CAS prohibition or exclusion. The guide data classifies the Texas Instruments TI-Nspire CX CAS as a CAS graphing calculator, so this file applies that quote to the exact model rather than to the broader TI-Nspire family. The note is intentionally conservative and does not infer approval from brand, graphing capability, classroom familiarity, or possible mode changes.

“Calculators with CAS (computer algebra system) functionality will no longer be allowed for tests within the SAT Suite.”

ACT prohibits calculators with built-in or downloaded CAS functionality and identifies TI-Nspire CAS among prohibited Texas Instruments calculators. The guide data classifies the Texas Instruments TI-Nspire CX CAS as a CAS graphing calculator, so this file applies that policy to the exact model rather than to the broader non-CAS TI-Nspire family.

“Calculators with built-in or downloaded computer algebra system (CAS) functionality are prohibited.”

NCEES says the listed models are the only acceptable calculators for the 2026 exams. The accepted Texas Instruments families are TI-30X and TI-36X. The TI-Nspire CX CAS is a different family and is also classified in this guide as a CAS graphing calculator, so it is not approved for FE exam use.

“The following calculator models are the only ones acceptable for use during the 2026 exams”