My kids got them at school. But if you lose it, you have to fork over $100. Unless you are in the Welfare Class and then screw it. Not going to happen.
It’s a good way to keep graphing calculators as expensive as possible.
But - again - they aren’t teaching math that requires a graphing calculator. Most high school level math is better done with a scientific calculator and knowing how to solve the problem, not a graphing calculator.