The barrier to replacing TI isn’t hardware. Casio has cheaper calculators and test makers generally have a pretty big selection of acceptable calulators[1]. The

The barrier to replacing TI isn’t hardware. Casio has cheaper calculators and test makers generally have a pretty big selection of acceptable calulators[1]. The barrier is often teachers. They don’t want to change from what they know already. 1: https://satsuite.collegeboard.org/sat/what-to-bring-do/calculator-policy https://satsuite.collegeboard.org/sat/what-to-bring-do/calcu...