This is already the case, and has been for decades. It is entirely possible to get through high school and undergraduate math/science education without ever owning a handheld graphing calculator, just borrowing one for the 1–2 exams which require them.

A “scientific calculator” (or for that matter a slide rule) is pretty much always sufficient in class, and a computer with a full keyboard and proper programming language (this could be a chromebook with a web browser, or a Raspberry Pi or used iPad with an external keyboard) is a better homework tool.