The NumWorks graphing calculator

Aha! I think I can answer this one

OK, so, ultimately the goal is for the student to learn stuff. We have exercises, tests, coursework, all that stuff _only_ in service of this goal. At the top end, everybody involved is aware that's what is going on, and if you propose to cheat the tests rather than learn the material they will stare at you like you just said you've got an idea how to defeat the safety limits and cut your own arms off with the wood saw. We do not much care that you are able to actually add 5 + 7 = 12‡, our goal in asking that is only to verify that you properly understood what's going on there so that when we later assume that knowledge you're not left staring blankly into space.

‡ Although it will help in some jobs to not need a calculator or other machine to do this sort of simple arithmetic that's not why we're teaching it to children in 2017.

But at high school level this idea about cheating being _futile_ is not going to be something we can expect most of the students to understand. So rather than replace 100 hours of her classes with material about "This is why you probably ought to pay attention and not cheat in tests" we just go out of our way to not let your daughter cheat until much later, by which time hopefully she'll have figured this out for herself.