Is it ok for teachers to write exam/assignment model solutions using AI?

I remember in high school literature class thinking that my classmates who were consulting Cliffs Notes were cheating. Then saw a copy of Cliffs Notes for our current reading assignment in our teacher's desk.

Similarly, in math classes, students often had minimalistic answers to half of the exercises printed in the back of the book, while the teacher had separate answers keys for all of the exercises.

I guess one thing to consider is that the goal of the student is not the same as the goal of the teacher. The teacher ostensibly has already learned how to do what is being taught in the class, while the students are there to learn it. If the teacher uses tools and resources to make their job easier, even tools and resources that they students do not have access to, that's fine.

If you’re still being accountable for the quality of the content, I think it’s fine.