Instead of not letting the students to use AI, how about we adjust the assessment method, and learning objective, to let the students do something that AI along cannot do, so that they can do it w/wo AI but still build up their own skill.
In the workplace, we're using AI anyway.
I'm not sure if this direction is suitable for kids, like we still learn to do calculation even when we have calculator (which is needed for some cases, but for complex math, we opt for tools)