It's not a double standard. It's the same standard applied to different things.

The best way we know of to learn something with AI is to do the work yourself, then watch AI blow you out of the water on the same task, learn its tricks and do the work again (better, even, since AI isn't that great at it yet)

Which means the teacher can use AI, and you can't.

This is also an entirely different subject to whether you should be learning that specific task in the first place or delegate it to AI.

It's not that it's forbidden fruit, but it's akin to asking your mom for every answer on your 3rd grade homework. You get the correct answer and learn nothing.

Sure, in the real world outside of school, you'll be able to get help from many external tools. But when the entire point is to learn something, any tools that prohibit you from learning should be avoided.

But the act of teaching is a double standard between the teacher and the students. I remember courses , exercises and exams when I was in highschool and university where calculators were forbidden because the goal wasn't to get the numerical answer, that was just the icing on the cake